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In-vitro study of the implant bed cooling during guided implantation using an additively manufactured drilling template with an integrated cooling system.
IF 3.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2025-03-19 DOI: 10.1186/s40729-025-00614-w
Vadim Kopzon, Sebastian Hahnel, Alexander Broll, Julian Fuellerer, Georg Beierlein, Martin Rosentritt

Purpose: The aim of this study was to investigate the performance of a novel 3D-printed cooling system for drilling templates during fully guided implant insertion.

Methods: Dental implant tunnel preparations were performed for the Straumann Bone Level implant in a 3D-printed synthetic resin model using either conventional guided or modified 3D-printed guided (with a cooling channel leading directly to the implantation site) drilling templates. Temperature measurements were performed with and without cooling at drill depths of 2, 4, 7, and 10 mm.

Results: For all drill depths and templates, cooling had a statistically significant (p < 0.001) influence on the measured mean temperature. ANOVA and Bonferroni correction revealed that there was a statistically significant (p < 0.001) difference in the cooling efficiency of the samples cooled with all the templates in comparison with that of the samples not cooled. The maximum temperature measured with the conventional template was 35.2° without cooling and 26.6 °C with cooling at depths of 2 and 10 mm, respectively. For the modified template, the maximum temperature reached 39.1 °C without cooling and 31.2 °C with cooling at depths of 10 and 2 mm, respectively.

Conclusions: Compared with the conventional cooling system, the newly developed internal cooling channel of the modified drill template did not lead to a better cooling effect.

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引用次数: 0
Comparison of cone-beam computed tomography with photon-counting detector computed tomography for dental implant surgery.
IF 3.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2025-03-13 DOI: 10.1186/s40729-025-00611-z
Adib Al-Haj Husain, Victor Mergen, Silvio Valdec, Nadin Al-Haj Husain, Bernd Stadlinger, Harald Essig, Thomas Frauenfelder, Peter Kessler, Suen An Nynke Lie, Hatem Alkadhi, Sebastian Winklhofer

Purpose: To compare cone-beam computed tomography (CBCT) with photon-counting detector computed tomography (PCD-CT) at equivalent radiation doses, focusing on qualitative and quantitative parameters relevant to dental implant surgery.

Methods: This ex vivo comparative study of porcine specimens assessed five imaging protocols with both CBCT and PCD-CT at three effective radiation dose levels (high: 360µSv, standard: 145µSv, low: 20µSv) to evaluate image quality, artifact burden, metal artifact susceptibility, and quantitative bone measurements in the mandibular region. Three blinded readers analyzed the data using a 5-point Likert scale (5 = highest to 1 = lowest rating) and performed linear bone measurements at implant planning sites. Statistical analysis included descriptive statistics and inter-reader reliability assessment using intraclass correlation coefficients (ICC).

Results: Each reader evaluated 30 data sets (12 CBCT, 18 PCD-CT), with 24 implant planning sites per imaging protocol. High-dose PCD-CT demonstrated the best image quality and diagnostic interpretability (4.89 ± 0.27), followed by standard-dose PCD-CT and CBCT (4.50 ± 0.73; 4.33 ± 0.61), with low-dose protocols showing intermediate quality with higher artifact burden. In comparison to CBCT, PCD-CT demonstrated superior performance in reducing implant-induced artifacts across all protocols. Quantitative bone measurements showed minimal variability, meeting clinical precision requirements for computer-assisted implant surgery. Both qualitative (ICCs:0.70-0.89; p < 0.001) and quantitative (ICCs:0.79-1; p < 0.001) analyses demonstrated high reliability, regardless of the reader's experience.

Conclusions: PCD-CT demonstrated superior image quality and reduced artifacts compared with CBCT at all radiation dose levels. These findings highlight PCD-CT's potential to enhance implant planning and improve clinical outcomes with reduced radiation exposure while maintaining diagnostic accuracy.

目的:比较锥束计算机断层扫描(CBCT)和光子计数探测器计算机断层扫描(PCD-CT)在同等辐射剂量下的成像效果,重点关注与种植牙手术相关的定性和定量参数:这项猪标本活体比较研究评估了 CBCT 和 PCD-CT 在三种有效辐射剂量水平(高:360µSv;标准:145µSv;低:20µSv)下的五种成像方案,以评估下颌区域的图像质量、伪影负担、金属伪影敏感性和骨定量测量。三位盲人读者使用 5 点李克特量表(5 = 最高评分,1 = 最低评分)分析数据,并在种植规划部位进行线性骨测量。统计分析包括描述性统计和使用类内相关系数(ICC)评估阅读者之间的可靠性:结果:每位阅读者评估了 30 组数据(12 个 CBCT、18 个 PCD-CT),每个成像方案有 24 个种植规划点。高剂量 PCD-CT 的图像质量和诊断可解释性最好(4.89 ± 0.27),其次是标准剂量 PCD-CT 和 CBCT(4.50 ± 0.73;4.33 ± 0.61),低剂量方案的图像质量居中,但伪影较多。与 CBCT 相比,在所有方案中,PCD-CT 在减少植入物引起的伪影方面都表现优异。骨定量测量的变异性极小,符合计算机辅助种植手术的临床精度要求。定性测量(ICCs:0.70-0.89;P与 CBCT 相比,PCD-CT 在所有辐射剂量水平下都能显示出更优越的图像质量并减少伪影。这些研究结果凸显了 PCD-CT 在保持诊断准确性的同时,通过减少辐射暴露来增强种植规划和改善临床效果的潜力。
{"title":"Comparison of cone-beam computed tomography with photon-counting detector computed tomography for dental implant surgery.","authors":"Adib Al-Haj Husain, Victor Mergen, Silvio Valdec, Nadin Al-Haj Husain, Bernd Stadlinger, Harald Essig, Thomas Frauenfelder, Peter Kessler, Suen An Nynke Lie, Hatem Alkadhi, Sebastian Winklhofer","doi":"10.1186/s40729-025-00611-z","DOIUrl":"10.1186/s40729-025-00611-z","url":null,"abstract":"<p><strong>Purpose: </strong>To compare cone-beam computed tomography (CBCT) with photon-counting detector computed tomography (PCD-CT) at equivalent radiation doses, focusing on qualitative and quantitative parameters relevant to dental implant surgery.</p><p><strong>Methods: </strong>This ex vivo comparative study of porcine specimens assessed five imaging protocols with both CBCT and PCD-CT at three effective radiation dose levels (high: 360µSv, standard: 145µSv, low: 20µSv) to evaluate image quality, artifact burden, metal artifact susceptibility, and quantitative bone measurements in the mandibular region. Three blinded readers analyzed the data using a 5-point Likert scale (5 = highest to 1 = lowest rating) and performed linear bone measurements at implant planning sites. Statistical analysis included descriptive statistics and inter-reader reliability assessment using intraclass correlation coefficients (ICC).</p><p><strong>Results: </strong>Each reader evaluated 30 data sets (12 CBCT, 18 PCD-CT), with 24 implant planning sites per imaging protocol. High-dose PCD-CT demonstrated the best image quality and diagnostic interpretability (4.89 ± 0.27), followed by standard-dose PCD-CT and CBCT (4.50 ± 0.73; 4.33 ± 0.61), with low-dose protocols showing intermediate quality with higher artifact burden. In comparison to CBCT, PCD-CT demonstrated superior performance in reducing implant-induced artifacts across all protocols. Quantitative bone measurements showed minimal variability, meeting clinical precision requirements for computer-assisted implant surgery. Both qualitative (ICCs:0.70-0.89; p < 0.001) and quantitative (ICCs:0.79-1; p < 0.001) analyses demonstrated high reliability, regardless of the reader's experience.</p><p><strong>Conclusions: </strong>PCD-CT demonstrated superior image quality and reduced artifacts compared with CBCT at all radiation dose levels. These findings highlight PCD-CT's potential to enhance implant planning and improve clinical outcomes with reduced radiation exposure while maintaining diagnostic accuracy.</p>","PeriodicalId":14076,"journal":{"name":"International Journal of Implant Dentistry","volume":"11 1","pages":"21"},"PeriodicalIF":3.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11906956/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143624435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Early marginal peri-implant bone loss around tissue-level implants: a retrospective radiographic evaluation.
IF 3.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2025-03-12 DOI: 10.1186/s40729-025-00613-x
A Solderer, C Giuliani, D B Wiedemeier, R E Jung, P R Schmidlin

Objectives: To retrospectively assess the potential impact of biological and host factors on radiographic bone loss following tissue-level implant placement and prosthetic rehabilitation.

Methods: The University database was reviewed to identify patients treated with tissue-level implants between 2006 and 2020 at the University of Zurich, Switzerland. The study included patients who received screw-retained implant rehabilitations in the posterior area without simultaneous hard- or soft-tissue augmentations and had a follow-up period of at least 12 months. Radiographic measures of marginal bone loss and supracrestal tissue height were conducted using periapical x-rays at different time points. Additional factors analysed included age, gender, smoking status, history of periodontitis, jaw of treatment, type of reconstruction, and prosthetic emergence angle. Associations between marginal bone loss and potential explanatory variables were visualised and analysed. Elastic net regressions were applied to examine potential relationships with marginal bone loss.

Results: A total of 1,479 patients were treated with tissue-level implants. After applying inclusion and exclusion criteria, 106 patients with 106 implants were included in the statistical evaluation after one year (T1, n = 106 implants), and 59 patients with 59 implants were evaluated after three years (T2, n = 59 implants). The mean marginal bone loss was 0.93 mm (SD 0.83) at T1 and 1.04 mm (SD 0.97) at T2. A strong correlation (Spearman) was found between mesial and distal bone loss. Smoking status and the jaw undergoing treatment were associated with bone loss. While these associations were observed in the univariate analysis, a more comprehensive multivariate analysis revealed that these variables had a limited effect on explaining radiographic bone loss.

Conclusions: During the initial rehabilitation period in tissue-level implants in this cohort smoking status and jaw of treatment seemed to influence early peri-implant bone loss. Further, a strong correlation between mesial and distal MBL was observed. Additional research is required to determine factors contributing to early bone loss following implant-prosthetic rehabilitation.

{"title":"Early marginal peri-implant bone loss around tissue-level implants: a retrospective radiographic evaluation.","authors":"A Solderer, C Giuliani, D B Wiedemeier, R E Jung, P R Schmidlin","doi":"10.1186/s40729-025-00613-x","DOIUrl":"10.1186/s40729-025-00613-x","url":null,"abstract":"<p><strong>Objectives: </strong>To retrospectively assess the potential impact of biological and host factors on radiographic bone loss following tissue-level implant placement and prosthetic rehabilitation.</p><p><strong>Methods: </strong>The University database was reviewed to identify patients treated with tissue-level implants between 2006 and 2020 at the University of Zurich, Switzerland. The study included patients who received screw-retained implant rehabilitations in the posterior area without simultaneous hard- or soft-tissue augmentations and had a follow-up period of at least 12 months. Radiographic measures of marginal bone loss and supracrestal tissue height were conducted using periapical x-rays at different time points. Additional factors analysed included age, gender, smoking status, history of periodontitis, jaw of treatment, type of reconstruction, and prosthetic emergence angle. Associations between marginal bone loss and potential explanatory variables were visualised and analysed. Elastic net regressions were applied to examine potential relationships with marginal bone loss.</p><p><strong>Results: </strong>A total of 1,479 patients were treated with tissue-level implants. After applying inclusion and exclusion criteria, 106 patients with 106 implants were included in the statistical evaluation after one year (T1, n = 106 implants), and 59 patients with 59 implants were evaluated after three years (T2, n = 59 implants). The mean marginal bone loss was 0.93 mm (SD 0.83) at T1 and 1.04 mm (SD 0.97) at T2. A strong correlation (Spearman) was found between mesial and distal bone loss. Smoking status and the jaw undergoing treatment were associated with bone loss. While these associations were observed in the univariate analysis, a more comprehensive multivariate analysis revealed that these variables had a limited effect on explaining radiographic bone loss.</p><p><strong>Conclusions: </strong>During the initial rehabilitation period in tissue-level implants in this cohort smoking status and jaw of treatment seemed to influence early peri-implant bone loss. Further, a strong correlation between mesial and distal MBL was observed. Additional research is required to determine factors contributing to early bone loss following implant-prosthetic rehabilitation.</p>","PeriodicalId":14076,"journal":{"name":"International Journal of Implant Dentistry","volume":"11 1","pages":"20"},"PeriodicalIF":3.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11903984/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143614896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of buccal bone lamella defects on hard and soft tissues with submerged and non-submerged healing in immediate implants - an experimental study in minipigs.
IF 3.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2025-03-12 DOI: 10.1186/s40729-025-00607-9
Christian Mehl, Sönke Harder, Leonie Zenzen, Hendrik Naujokat, Jörg Wiltfang, Yahya Acil, Matthias Kern

Purpose: This study assessed the impact of the buccal bone on hard and soft tissues in submerged and non-submerged immediate implants using a minipig model.

Methods: Sixty-five titanium implants (Camlog Progressive Line) were placed in four minipigs immediately after tooth extraction. All non-submerged (NSM) implants received a mechanically induced buccal bone defect (NSM-BD), whereas the submerged group (SM) was classified as defective (SM-BD) and intact (SM-BI). All bone defects underwent guided bone regeneration (GBR). After four months, the minipigs were sacrificed. Harvested specimens were analysed using histomorphometry and light and fluorescence microscopy. The evaluated parameters included the sulcus (S), implant epithelium (IE), connective tissue (CT), biological width (BW), highest soft tissue point (HSTP), and first hard tissue contact (FHTC).

Results: Of the 65 implants four (6%) were lost, while all remaining implants demonstrated clinical stability (Periotest). Despite GBR failures caused by the pigs' hay consumption after one week, no significant differences (p > 0.5) were observed between SM-BD and NSM-BD in buccal parameters (NSM-BD/SM-BD: S = 0.6 mm, IE = 2.9/2.4 mm, CT = 3.5/3.4 mm, BW = 5.9/5.8 mm). Compared to SM-BI soft-tissue parameters increased in length with reduced buccal bone lamella (SM-BI/SM-BD: S = 0.4/0,6 mm; p ≤ 0.04, SM-BI/NSM-BD: IE = 1.8/2.9 mm; p ≤ 0.007, SM-BI/SM-BD: CT = 2.5/3.4 mm; p ≤ 0.01, BW = 4.0/5.8 mm; p ≤ 0.007). The buccal HSTP remained unaffected (p > 0.5; (NSM-BD = 1.8 mm, SM-BD = 1.0 mm, SM-BI = 2.0 mm; p > 0.5) for all groups.

Conclusion: A buccal bone defect resulted in prolonged S, IE, CT, and BW. However, the aesthetic parameter HSTP did not exhibit significant differences (p > 0.5) at the buccal implant site when comparing the SM and NSM healing protocols.

{"title":"Influence of buccal bone lamella defects on hard and soft tissues with submerged and non-submerged healing in immediate implants - an experimental study in minipigs.","authors":"Christian Mehl, Sönke Harder, Leonie Zenzen, Hendrik Naujokat, Jörg Wiltfang, Yahya Acil, Matthias Kern","doi":"10.1186/s40729-025-00607-9","DOIUrl":"10.1186/s40729-025-00607-9","url":null,"abstract":"<p><strong>Purpose: </strong>This study assessed the impact of the buccal bone on hard and soft tissues in submerged and non-submerged immediate implants using a minipig model.</p><p><strong>Methods: </strong>Sixty-five titanium implants (Camlog Progressive Line) were placed in four minipigs immediately after tooth extraction. All non-submerged (NSM) implants received a mechanically induced buccal bone defect (NSM-BD), whereas the submerged group (SM) was classified as defective (SM-BD) and intact (SM-BI). All bone defects underwent guided bone regeneration (GBR). After four months, the minipigs were sacrificed. Harvested specimens were analysed using histomorphometry and light and fluorescence microscopy. The evaluated parameters included the sulcus (S), implant epithelium (IE), connective tissue (CT), biological width (BW), highest soft tissue point (HSTP), and first hard tissue contact (FHTC).</p><p><strong>Results: </strong>Of the 65 implants four (6%) were lost, while all remaining implants demonstrated clinical stability (Periotest). Despite GBR failures caused by the pigs' hay consumption after one week, no significant differences (p > 0.5) were observed between SM-BD and NSM-BD in buccal parameters (NSM-BD/SM-BD: S = 0.6 mm, IE = 2.9/2.4 mm, CT = 3.5/3.4 mm, BW = 5.9/5.8 mm). Compared to SM-BI soft-tissue parameters increased in length with reduced buccal bone lamella (SM-BI/SM-BD: S = 0.4/0,6 mm; p ≤ 0.04, SM-BI/NSM-BD: IE = 1.8/2.9 mm; p ≤ 0.007, SM-BI/SM-BD: CT = 2.5/3.4 mm; p ≤ 0.01, BW = 4.0/5.8 mm; p ≤ 0.007). The buccal HSTP remained unaffected (p > 0.5; (NSM-BD = 1.8 mm, SM-BD = 1.0 mm, SM-BI = 2.0 mm; p > 0.5) for all groups.</p><p><strong>Conclusion: </strong>A buccal bone defect resulted in prolonged S, IE, CT, and BW. However, the aesthetic parameter HSTP did not exhibit significant differences (p > 0.5) at the buccal implant site when comparing the SM and NSM healing protocols.</p>","PeriodicalId":14076,"journal":{"name":"International Journal of Implant Dentistry","volume":"11 1","pages":"19"},"PeriodicalIF":3.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11904072/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143614897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Horizontal vascular-stalked split osteotomy (HVSO): a bone augmentation technique for the atrophic jaw- a retrospective cohort study in 29 patients.
IF 3.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2025-03-07 DOI: 10.1186/s40729-025-00608-8
Dirk Nolte, Johannes Angermair, Heidi Bradatsch, Rolf Ewers, Michael Alfertshofer, Robert Linsenmann, Sven Otto, Karin Christine Huth

Background: Implant therapy in the advanced atrophic jaw remains challenging in oral and maxillofacial surgery. Hence, a plethora of different augmentation procedures to increase bone volume in the maxilla and mandible have been published. Horizontal vascular-stalked split osteotomy (HVSO) represents a safe and effective approach for the three-dimensional jaw augmentation since it combines maximum vascularization through lingual or palatinal periosteal stalking with reduced grafting morbidity.

Objective: To analyze the efficacy of HVSO for implantation therapy in atrophic jaws by assessing vertical bone gain and implant survival rates.

Materials and methods: A total of n = 29 patients (14 females, 15 males) with a mean age of 55.4 ± 10.0 years and reduced volume of the alveolar ridge were retrospectively analyzed after treatment with 34 HVSOs in the maxilla and mandible. After controlled clinical follow-up of six months after augmentation, enossal implantation of 79 implants (maxilla 45, mandible 34) was performed. A standardized two-dimensional radiological assessment with panoramic tomography (OPTG) of the augmented bone height and clinical evaluation of the implants was performed over a mean follow-up period of 2.3 years.

Results: HVSO resulted in a significant increase in vertical bone height by 4.4 mm ± 2.0 mm (mean vertical gain: +59.4%) with + 101% in the maxilla and + 27.5% in the mandible directly after the procedure (T1), with both p < 0.001. After a mean observation period of 2.3 years bone height remained stable with a total gain of 41.4% (maxilla: 72.6%, mandible: 18.6%), with p < 0.001 and p = 0.001, respectively. Overall implant survival rate was 91% (maxilla: 89%; mandible: 94%).

Conclusion: HVSO reliably supports significantly enhanced vertical bone height with long-term stable results, thereby facilitating successful implantation in atrophic jaws with high implant survival rates observed over an extended follow-up period.

Clinical trial number: Not applicable as the study was no clinical trial.

{"title":"Horizontal vascular-stalked split osteotomy (HVSO): a bone augmentation technique for the atrophic jaw- a retrospective cohort study in 29 patients.","authors":"Dirk Nolte, Johannes Angermair, Heidi Bradatsch, Rolf Ewers, Michael Alfertshofer, Robert Linsenmann, Sven Otto, Karin Christine Huth","doi":"10.1186/s40729-025-00608-8","DOIUrl":"10.1186/s40729-025-00608-8","url":null,"abstract":"<p><strong>Background: </strong>Implant therapy in the advanced atrophic jaw remains challenging in oral and maxillofacial surgery. Hence, a plethora of different augmentation procedures to increase bone volume in the maxilla and mandible have been published. Horizontal vascular-stalked split osteotomy (HVSO) represents a safe and effective approach for the three-dimensional jaw augmentation since it combines maximum vascularization through lingual or palatinal periosteal stalking with reduced grafting morbidity.</p><p><strong>Objective: </strong>To analyze the efficacy of HVSO for implantation therapy in atrophic jaws by assessing vertical bone gain and implant survival rates.</p><p><strong>Materials and methods: </strong>A total of n = 29 patients (14 females, 15 males) with a mean age of 55.4 ± 10.0 years and reduced volume of the alveolar ridge were retrospectively analyzed after treatment with 34 HVSOs in the maxilla and mandible. After controlled clinical follow-up of six months after augmentation, enossal implantation of 79 implants (maxilla 45, mandible 34) was performed. A standardized two-dimensional radiological assessment with panoramic tomography (OPTG) of the augmented bone height and clinical evaluation of the implants was performed over a mean follow-up period of 2.3 years.</p><p><strong>Results: </strong>HVSO resulted in a significant increase in vertical bone height by 4.4 mm ± 2.0 mm (mean vertical gain: +59.4%) with + 101% in the maxilla and + 27.5% in the mandible directly after the procedure (T1), with both p < 0.001. After a mean observation period of 2.3 years bone height remained stable with a total gain of 41.4% (maxilla: 72.6%, mandible: 18.6%), with p < 0.001 and p = 0.001, respectively. Overall implant survival rate was 91% (maxilla: 89%; mandible: 94%).</p><p><strong>Conclusion: </strong>HVSO reliably supports significantly enhanced vertical bone height with long-term stable results, thereby facilitating successful implantation in atrophic jaws with high implant survival rates observed over an extended follow-up period.</p><p><strong>Clinical trial number: </strong>Not applicable as the study was no clinical trial.</p>","PeriodicalId":14076,"journal":{"name":"International Journal of Implant Dentistry","volume":"11 1","pages":"18"},"PeriodicalIF":3.1,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11889328/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143585732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Primary implant stability of two implant macro-designs in different alveolar ridge morphologies: an in vitro study.
IF 3.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2025-03-06 DOI: 10.1186/s40729-025-00605-x
Anna Jenner, Gabriela P Sabatini, Samir Abou-Ayash, Emilio Couso-Queiruga, Vivianne Chappuis, Clemens Raabe

Purpose: The primary aim of this in vitro study was to investigate the primary implant stability obtained in immediate and late implant placement scenarios. Secondary aims evaluated the effect of two distinct implant macro-designs and examined the correlation between resonance frequency analysis (RFA) and final insertion torque.

Methods: Partially edentulous maxillary models including six single sites simulating extraction sockets and healed alveolar ridges were used. Virtual implant planning facilitated static computer-assisted implant placement of bone level implants with either a shallow-threaded and cylindrical (BL), or deep-threaded and tapered implant macro-design (BLX). The insertion torque was continuously measured during implant placement, and RFA was performed after final implant positioning.

Results: One-hundred and forty-four implants were equally distributed to two alveolar ridge morphologies and implant designs. Higher final insertion torque and RFA values were observed for implants placed in healed ridges compared to extraction sockets (40.8 ± 13.5 vs. 20.6 ± 8.4 Ncm, and RFA 70.7 ± 2.8 vs. 59.6 ± 6.5, both p < 0.001), and for BL implants compared to BLX implants (35.7 ± 13.0 vs. 25.7 ± 8.9 Ncm, and RFA 66.7 ± 4.4 vs. 63.6 ± 4.9, both p < 0.001). Insertion torque and mean RFA values positively correlated (r = 0.742; p < 0.001).

Conclusion: Primary implant stability is significantly affected by the alveolar ridge morphology and the implant macro-design, demonstrating higher values in healed sites and shallow-threaded, cylindrical implants. Therefore, a tailored selection of the implant design depending on the implant placement and loading protocol is recommended.

{"title":"Primary implant stability of two implant macro-designs in different alveolar ridge morphologies: an in vitro study.","authors":"Anna Jenner, Gabriela P Sabatini, Samir Abou-Ayash, Emilio Couso-Queiruga, Vivianne Chappuis, Clemens Raabe","doi":"10.1186/s40729-025-00605-x","DOIUrl":"10.1186/s40729-025-00605-x","url":null,"abstract":"<p><strong>Purpose: </strong>The primary aim of this in vitro study was to investigate the primary implant stability obtained in immediate and late implant placement scenarios. Secondary aims evaluated the effect of two distinct implant macro-designs and examined the correlation between resonance frequency analysis (RFA) and final insertion torque.</p><p><strong>Methods: </strong>Partially edentulous maxillary models including six single sites simulating extraction sockets and healed alveolar ridges were used. Virtual implant planning facilitated static computer-assisted implant placement of bone level implants with either a shallow-threaded and cylindrical (BL), or deep-threaded and tapered implant macro-design (BLX). The insertion torque was continuously measured during implant placement, and RFA was performed after final implant positioning.</p><p><strong>Results: </strong>One-hundred and forty-four implants were equally distributed to two alveolar ridge morphologies and implant designs. Higher final insertion torque and RFA values were observed for implants placed in healed ridges compared to extraction sockets (40.8 ± 13.5 vs. 20.6 ± 8.4 Ncm, and RFA 70.7 ± 2.8 vs. 59.6 ± 6.5, both p < 0.001), and for BL implants compared to BLX implants (35.7 ± 13.0 vs. 25.7 ± 8.9 Ncm, and RFA 66.7 ± 4.4 vs. 63.6 ± 4.9, both p < 0.001). Insertion torque and mean RFA values positively correlated (r = 0.742; p < 0.001).</p><p><strong>Conclusion: </strong>Primary implant stability is significantly affected by the alveolar ridge morphology and the implant macro-design, demonstrating higher values in healed sites and shallow-threaded, cylindrical implants. Therefore, a tailored selection of the implant design depending on the implant placement and loading protocol is recommended.</p>","PeriodicalId":14076,"journal":{"name":"International Journal of Implant Dentistry","volume":"11 1","pages":"17"},"PeriodicalIF":3.1,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11885739/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143566901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The influence of platform switching and platform matching on marginal bone loss in immediately inserted dental implants: a retrospective clinical study. 平台切换和平台匹配对即刻种植牙边缘骨质流失的影响:一项回顾性临床研究。
IF 3.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2025-03-04 DOI: 10.1186/s40729-025-00604-y
Sameh Attia, Tugce Aykanat, Veronika Chuchmová, Kim Natalie Stolte, Ben Harder, Lucas Schilling, Philipp Streckbein, Hans-Peter Howaldt, Abanoub Riad, Sebastian Böttger

Purpose: The aim of this retrospective study was to investigate and compare the effects of platform switching (PS) and platform matching (PM) on marginal bone loss (MBL) and clinical parameters in immediately inserted dental implants.

Methods: Thirty-seven patients were included (PS group: twenty-one patients, PM group: sixteen patients), with follow-up periods ranging from six months to 23 years. MBL was measured using orthopantomograms (OPG), and implant success was evaluated using the Buser, Albrektsson, and Attia criteria. Regression analysis was conducted to assess total bone loss.

Results: The BEGO RI implant system was used in 83.8% of cases. Mesial MBL averaged 0.26 mm in the PS group and 0.75 mm in the PM group, while distal MBL was 0.68 mm for the PS group and 0.53 mm for the PM group. A significant difference was observed in mesial MBL, with the PS group showing less bone loss (p. = 0.044). Regression analysis indicated that PM implants were associated with significantly greater mesial bone loss compared to PS implants (p. = 0.039). No significant differences in implant success were observed between the PS and PM groups based on the Buser score, Albrektsson criteria, and Attia score.

Conclusion: Both PS and PM implants showed comparable long-term functionality. No significant differences were found in total bone loss between the groups, but PS implants showed significantly lower mesial MBL. While both systems are viable for immediate implantation, PS implants may offer advantages in preserving peri-implant bone. Further prospective studies are needed to validate these findings.

{"title":"The influence of platform switching and platform matching on marginal bone loss in immediately inserted dental implants: a retrospective clinical study.","authors":"Sameh Attia, Tugce Aykanat, Veronika Chuchmová, Kim Natalie Stolte, Ben Harder, Lucas Schilling, Philipp Streckbein, Hans-Peter Howaldt, Abanoub Riad, Sebastian Böttger","doi":"10.1186/s40729-025-00604-y","DOIUrl":"10.1186/s40729-025-00604-y","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of this retrospective study was to investigate and compare the effects of platform switching (PS) and platform matching (PM) on marginal bone loss (MBL) and clinical parameters in immediately inserted dental implants.</p><p><strong>Methods: </strong>Thirty-seven patients were included (PS group: twenty-one patients, PM group: sixteen patients), with follow-up periods ranging from six months to 23 years. MBL was measured using orthopantomograms (OPG), and implant success was evaluated using the Buser, Albrektsson, and Attia criteria. Regression analysis was conducted to assess total bone loss.</p><p><strong>Results: </strong>The BEGO RI implant system was used in 83.8% of cases. Mesial MBL averaged 0.26 mm in the PS group and 0.75 mm in the PM group, while distal MBL was 0.68 mm for the PS group and 0.53 mm for the PM group. A significant difference was observed in mesial MBL, with the PS group showing less bone loss (p. = 0.044). Regression analysis indicated that PM implants were associated with significantly greater mesial bone loss compared to PS implants (p. = 0.039). No significant differences in implant success were observed between the PS and PM groups based on the Buser score, Albrektsson criteria, and Attia score.</p><p><strong>Conclusion: </strong>Both PS and PM implants showed comparable long-term functionality. No significant differences were found in total bone loss between the groups, but PS implants showed significantly lower mesial MBL. While both systems are viable for immediate implantation, PS implants may offer advantages in preserving peri-implant bone. Further prospective studies are needed to validate these findings.</p>","PeriodicalId":14076,"journal":{"name":"International Journal of Implant Dentistry","volume":"11 1","pages":"16"},"PeriodicalIF":3.1,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11880450/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143541938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction: Treatment of peri-implant mucositis using an Er:YAG laser or an ultrasonic device: a randomized, controlled clinical trial.
IF 3.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2025-02-26 DOI: 10.1186/s40729-025-00599-6
Viveca Wallin Bengtsson, Akira Aoki, Koji Mizutani, Christel Lindahl, Stefan Renvert
{"title":"Correction: Treatment of peri-implant mucositis using an Er:YAG laser or an ultrasonic device: a randomized, controlled clinical trial.","authors":"Viveca Wallin Bengtsson, Akira Aoki, Koji Mizutani, Christel Lindahl, Stefan Renvert","doi":"10.1186/s40729-025-00599-6","DOIUrl":"10.1186/s40729-025-00599-6","url":null,"abstract":"","PeriodicalId":14076,"journal":{"name":"International Journal of Implant Dentistry","volume":"11 1","pages":"15"},"PeriodicalIF":3.1,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865375/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143500787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of virtual planning to maxillofacial reconstruction with an implant prosthesis: a case report.
IF 3.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2025-02-24 DOI: 10.1186/s40729-025-00600-2
Yutaro Oyamada, Hiroyuki Yamada, Ikuya Miyamoto, Hisatomo Kondo

Background: A case of postoperative mandibular defects was successfully managed using an intraoral scanner and computer-aided design/computer-aided manufacturing (CAD/CAM) technology, facilitating jaw reconstruction and functional restoration with implants for a critical mandibular defect.

Case presentation: The intraoral scanner was used to scan the maxilla and mandible, and occlusal scans were acquired. The obtained data were imported to CAD/CAM software to design the virtual teeth. Digital Imaging and Communications in Medicine data of preoperative cone-beam computed tomography images were converted to three-dimensional (3D) data using specialized software to examine the mandibular bone volume and modify the jawbone morphology. All data were superimposed on the implant simulation software, and jawbone morphology was modified considering the implant placement position. The finalized jawbone 3D data were printed using a 3D printer. Then, a titanium mesh tray was fabricated on the 3D printed model. Subsequently, iliac cancellous bone grafting using a titanium mesh tray and implant treatment were performed.

Conclusions: The application of digital technology helped visualize the final image of the treatment result and collaborate closely with the oral surgeon from the pre-reconstruction stage. This technique allows mandible reconstruction after considering the implant placement based on the ideal prosthesis.

{"title":"Application of virtual planning to maxillofacial reconstruction with an implant prosthesis: a case report.","authors":"Yutaro Oyamada, Hiroyuki Yamada, Ikuya Miyamoto, Hisatomo Kondo","doi":"10.1186/s40729-025-00600-2","DOIUrl":"10.1186/s40729-025-00600-2","url":null,"abstract":"<p><strong>Background: </strong>A case of postoperative mandibular defects was successfully managed using an intraoral scanner and computer-aided design/computer-aided manufacturing (CAD/CAM) technology, facilitating jaw reconstruction and functional restoration with implants for a critical mandibular defect.</p><p><strong>Case presentation: </strong>The intraoral scanner was used to scan the maxilla and mandible, and occlusal scans were acquired. The obtained data were imported to CAD/CAM software to design the virtual teeth. Digital Imaging and Communications in Medicine data of preoperative cone-beam computed tomography images were converted to three-dimensional (3D) data using specialized software to examine the mandibular bone volume and modify the jawbone morphology. All data were superimposed on the implant simulation software, and jawbone morphology was modified considering the implant placement position. The finalized jawbone 3D data were printed using a 3D printer. Then, a titanium mesh tray was fabricated on the 3D printed model. Subsequently, iliac cancellous bone grafting using a titanium mesh tray and implant treatment were performed.</p><p><strong>Conclusions: </strong>The application of digital technology helped visualize the final image of the treatment result and collaborate closely with the oral surgeon from the pre-reconstruction stage. This technique allows mandible reconstruction after considering the implant placement based on the ideal prosthesis.</p>","PeriodicalId":14076,"journal":{"name":"International Journal of Implant Dentistry","volume":"11 1","pages":"14"},"PeriodicalIF":3.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11850690/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143483005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biofunctionalization of silk fibroin scaffolds with enamel matrix protein and injectable platelet rich fibrin for soft tissue augmentation: an in-ovo study.
IF 3.1 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2025-02-20 DOI: 10.1186/s40729-025-00601-1
Diana Heimes, Nadine Wiesmann-Imilowski, Timpe Heidebrecht, Sebastian Blatt, Andreas Pabst, Philipp Becker, Sandra Fuest, Jürgen Brieger, Ralf Smeets, Peer W Kämmerer

Purpose: Silk fibroin (SF) is a biomaterial derived from the cocoon of the mulberry silkworm. This study aimed to assess the capacity of SF matrices biologized with injectable platelet-rich fibrin (iPRF) or enamel matrix protein (EMP) to modulate angiogenesis and immune response in the chorioallantoic membrane (CAM) assay.

Methods: 300 eggs were divided into the following groups: CM + NaCl, CM + iPRF, CM + EMP, SF + NaCl, SF + iPRF, and SF + EMP. Matrices were applied to the CAM on embryonic development day (EDD) 7 after rehydration. Angiogenesis, represented by vascularized area, vessel density, and vessel junctions, was evaluated on EDD 10, 12, and 14. Additionally, gene expression of HIF-1ɑ, VEGF, MMP-13, and NOS2 was assessed via quantitative polymerase chain reaction (qPCR) on EDD 11 and 14.

Results: The number of vascularized specimens was notably higher in SF matrices regardless of the treatment applied, while in the CM group, only matrices biofunctionalized with iPRF demonstrated vascularization. On EDD 14, the CM + iPRF group exhibited the highest values for total vascularized area (CM + iPRF: 57.52%, SF + iPRF: 21.87%, p < 0.001), vessel density (CM + iPRF: 0.0067 μm/µm2, SF + iPRF: 0.0032 μm/µm2, p = 0.002), number of vessel junctions (CM + iPRF: 14.45, SF + iPRF: 4.82, p = 0.001). Gene expressions displayed high data variability and no significant differences between the groups.

Conclusions: Biofunctionalization with iPRF in CM leads to a high vascularization rate probably through their capability of retaining higher liquid volumes, suggesting improved intraoral wound healing after guided tissue regeneration (GTR). Despite biofunctionalization, SF matrices exhibit a high vascularization, indicating SF as a promising material for GTR.

{"title":"Biofunctionalization of silk fibroin scaffolds with enamel matrix protein and injectable platelet rich fibrin for soft tissue augmentation: an in-ovo study.","authors":"Diana Heimes, Nadine Wiesmann-Imilowski, Timpe Heidebrecht, Sebastian Blatt, Andreas Pabst, Philipp Becker, Sandra Fuest, Jürgen Brieger, Ralf Smeets, Peer W Kämmerer","doi":"10.1186/s40729-025-00601-1","DOIUrl":"10.1186/s40729-025-00601-1","url":null,"abstract":"<p><strong>Purpose: </strong>Silk fibroin (SF) is a biomaterial derived from the cocoon of the mulberry silkworm. This study aimed to assess the capacity of SF matrices biologized with injectable platelet-rich fibrin (iPRF) or enamel matrix protein (EMP) to modulate angiogenesis and immune response in the chorioallantoic membrane (CAM) assay.</p><p><strong>Methods: </strong>300 eggs were divided into the following groups: CM + NaCl, CM + iPRF, CM + EMP, SF + NaCl, SF + iPRF, and SF + EMP. Matrices were applied to the CAM on embryonic development day (EDD) 7 after rehydration. Angiogenesis, represented by vascularized area, vessel density, and vessel junctions, was evaluated on EDD 10, 12, and 14. Additionally, gene expression of HIF-1ɑ, VEGF, MMP-13, and NOS2 was assessed via quantitative polymerase chain reaction (qPCR) on EDD 11 and 14.</p><p><strong>Results: </strong>The number of vascularized specimens was notably higher in SF matrices regardless of the treatment applied, while in the CM group, only matrices biofunctionalized with iPRF demonstrated vascularization. On EDD 14, the CM + iPRF group exhibited the highest values for total vascularized area (CM + iPRF: 57.52%, SF + iPRF: 21.87%, p < 0.001), vessel density (CM + iPRF: 0.0067 μm/µm<sup>2</sup>, SF + iPRF: 0.0032 μm/µm<sup>2</sup>, p = 0.002), number of vessel junctions (CM + iPRF: 14.45, SF + iPRF: 4.82, p = 0.001). Gene expressions displayed high data variability and no significant differences between the groups.</p><p><strong>Conclusions: </strong>Biofunctionalization with iPRF in CM leads to a high vascularization rate probably through their capability of retaining higher liquid volumes, suggesting improved intraoral wound healing after guided tissue regeneration (GTR). Despite biofunctionalization, SF matrices exhibit a high vascularization, indicating SF as a promising material for GTR.</p>","PeriodicalId":14076,"journal":{"name":"International Journal of Implant Dentistry","volume":"11 1","pages":"13"},"PeriodicalIF":3.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11842663/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143457754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
International Journal of Implant Dentistry
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