Pub Date : 2019-06-14DOI: 10.23805/JO.2019.11.02.05
A. D. Fiore, M. D. Francesco, C. Monaco, E. Stocco, P. Vigolo, E. Stellini
Aim : With the advance of digital technology, intraoral digital impression (DI) technique has become a major trend in prosthodontics with respect to traditional impression (TI) techniques; despite that, very few data are available concerning its accuracy. Thus, the purpose of this study was to compare the effectiveness of DI versus TI considering both marginal and internal gap (MG, IG, respectively) in cobalt-chromium (Co-Cr) single crowns manufactured by mean of computer-aided design and computer-aided manufacturing (CAD/CAM) technology. Material and Methods: Thirty posterior teeth were considered for this study. For each abutment tooth, sixty and thirty copings were produced with the aid of TI and DI, respectively. Thirty of the sixty copings of the TI-group were then randomly selected to be veneered and cemented onto existing abutments. The space existing between the internal surface of the coping and the abutment tooth was evaluated onto an in vitro replica; the MG and IG were measured by Scanning Electron Microscope. The data were analysed by the Wilcoxon test (1-tailed). Results: The mean MG was 75.04 μm (SD = 13.12) and 55.01 μm (SD = 7.01) for the TI-group and DI-group, respectively. As regards the mean IGs, the values recorded were of 78.36 μm (SD = 19.66) for the TI-group and 59.20 μm (SD=3.33) for the DI-group. A statistically significant difference was found between two groups (p-value = 0.001). Conclusions: Copings manufactured from DI showed better MGs and IGs with respect to copings produced from TI. However, both approaches produced clinically acceptable results.
{"title":"Comparison of accuracy of single-crown generated from digital and conventional impressions: an in vivo controlled trial.","authors":"A. D. Fiore, M. D. Francesco, C. Monaco, E. Stocco, P. Vigolo, E. Stellini","doi":"10.23805/JO.2019.11.02.05","DOIUrl":"https://doi.org/10.23805/JO.2019.11.02.05","url":null,"abstract":"Aim : With the advance of digital technology, intraoral digital impression (DI) technique has become a major trend in prosthodontics with respect to traditional impression (TI) techniques; despite that, very few data are available concerning its accuracy. Thus, the purpose of this study was to compare the effectiveness of DI versus TI considering both marginal and internal gap (MG, IG, respectively) in cobalt-chromium (Co-Cr) single crowns manufactured by mean of computer-aided design and computer-aided manufacturing (CAD/CAM) technology. \u0000Material and Methods: Thirty posterior teeth were considered for this study. For each abutment tooth, sixty and thirty copings were produced with the aid of TI and DI, respectively. Thirty of the sixty copings of the TI-group were then randomly selected to be veneered and cemented onto existing abutments. The space existing between the internal surface of the coping and the abutment tooth was evaluated onto an in vitro replica; the MG and IG were measured by Scanning Electron Microscope. The data were analysed by the Wilcoxon test (1-tailed). \u0000Results: The mean MG was 75.04 μm (SD = 13.12) and 55.01 μm (SD = 7.01) for the TI-group and DI-group, respectively. As regards the mean IGs, the values recorded were of 78.36 μm (SD = 19.66) for the TI-group and 59.20 μm (SD=3.33) for the DI-group. A statistically significant difference was found between two groups (p-value = 0.001). \u0000Conclusions: Copings manufactured from DI showed better MGs and IGs with respect to copings produced from TI. However, both approaches produced clinically acceptable results.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77774413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-06-14DOI: 10.23805/JO.2019.11.02.04
G. Thomé, S. Pires, R. Salatti, C. A. Cartelli, M. B. Moura, L. Trojan
Aim The aim of this study was to observe the behavior of the hybrid implants, evaluating the insertion test with different drilling protocols and present two case reports of hybrid implant placed in the upper arch. Materials and methods For the in vitro study 50 implants were placed in 2 different types of synthetic bone blocks composed of rigid solid polyurethane (high density, type I, and low density, type IV). The implants were divided into five groups (n=10): Group 1 (Test) hybrid/conical implants of 3.75 mm x 13 mm placed in a high density bone block with oversized instrumentation; Group 2 (Control) cutting/cylindrical of 3.75 mm x 13 mm, placed in a high density bone block with regular instrumentation; Group 3 (Test) hybrid/conical implants of 4.3 mm x 13 mm placed in a low density bone block with undersized instrumentation; Group 4 (Test) hybrid/conical implants of 4.3 mm x 13 mm placed in a low density bone block with regular instrumentation; Group 5 (Control) compact/conical implants of 4.3 mm x 13 mm placed in a low density bone block with regular instrumentation. Two cases are reported of hybrid implants placed in the maxilla with 12-month follow up. Results No significant difference was observed between hybrid/conical implants and the control group, according to final placement torque in high and low density bone. However, undersized instrumentation showed a significantly increased final torque placement for hybrid/conical implant. Conclusions Implant macrostructure, bone instrumentation technique influence the insertion torque for hybrid/conical implants. At the 12-month follow-up the implants were stable.
目的本研究的目的是观察混合种植体的行为，评估不同钻孔方案的插入试验，并报告两例混合种植体放置在上弓的病例。在体外研究中，将50个种植体放置在2种不同类型的由硬质固体聚氨酯组成的合成骨块中(高密度I型和低密度IV型)。种植体分为5组(n=10):第一组(试验)3.75 mm x 13 mm的混合/锥形种植体放置在高密度骨块中，带有超大的器械;第2组(对照组)切割/圆柱形3.75 mm x 13 mm，放置在高密度骨块中，使用常规器械;第3组(测试)混合/锥形种植体4.3 mm x 13 mm，放置在低密度骨块中，内固定物尺寸较小;第4组(试验)混合/锥形种植体4.3 mm x 13 mm，放置在低密度骨块中，使用常规器械;第5组(对照组)4.3 mm x 13 mm的致密/锥形种植体放置在低密度骨块中，并使用常规内固定。本文报告2例上颌骨植体混合型植体，随访12个月。结果混合/锥形种植体在高、低密度骨的最终放置扭矩与对照组无显著差异。然而，小尺寸的内固定显示混合型/锥形内固定的最终扭矩明显增加。结论种植体宏观结构、骨内固定技术对混合型/锥形种植体植入扭矩有影响。在12个月的随访中，植入物稳定。
{"title":"Analysis in vitro of the insertion torque of hybrid tapered implants with different types of instrumentation and two clinical cases report","authors":"G. Thomé, S. Pires, R. Salatti, C. A. Cartelli, M. B. Moura, L. Trojan","doi":"10.23805/JO.2019.11.02.04","DOIUrl":"https://doi.org/10.23805/JO.2019.11.02.04","url":null,"abstract":"Aim The aim of this study was to observe the behavior of the hybrid implants, evaluating the insertion test with different drilling protocols and present two case reports of hybrid implant placed in the upper arch. \u0000Materials and methods For the in vitro study 50 implants were placed in 2 different types of synthetic bone blocks composed of rigid solid polyurethane (high density, type I, and low density, type IV). The implants were divided into five groups (n=10): Group 1 (Test) hybrid/conical implants of 3.75 mm x 13 mm placed in a high density bone block with oversized instrumentation; Group 2 (Control) cutting/cylindrical of 3.75 mm x 13 mm, placed in a high density bone block with regular instrumentation; Group 3 (Test) hybrid/conical implants of 4.3 mm x 13 mm placed in a low density bone block with undersized instrumentation; Group 4 (Test) hybrid/conical implants of 4.3 mm x 13 mm placed in a low density bone block with regular instrumentation; Group 5 (Control) compact/conical implants of 4.3 mm x 13 mm placed in a low density bone block with regular instrumentation. Two cases are reported of hybrid implants placed in the maxilla with 12-month follow up. \u0000Results No significant difference was observed between hybrid/conical implants and the control group, according to final placement torque in high and low density bone. However, undersized instrumentation showed a significantly increased final torque placement for hybrid/conical implant. \u0000Conclusions Implant macrostructure, bone instrumentation technique influence the insertion torque for hybrid/conical implants. At the 12-month follow-up the implants were stable.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87170189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-20DOI: 10.23805/JO.2019.11.02.03
M. Pecciarini, A. Biagioni, M. Ferrari
Aim The purpose of this review is to verify, in the existing literature, how many clinical studies have been conducted by performing intraoral digital impressions on prepared teeth. Materials and methods An electronic search was performed through Pubmed database, and the keywords were: “digital impression”, “intraoral digital impression”, “NOT implant”. The selection process started with a primary screening based on titles and abstracts. Afterward, full-texts were carefully read. Only studies in accordance with the inclusion criteria were selected. Results Only 16 studies dealing with the required criteria were included. Most of the studies evaluated marginal fit, impression time, dentists’ and patients’ evaluation of impressions and clinical outcome of CAD/CAM (Computer-aided design/Computer- aided manufacturing) fabricated single crown and multiple-fixed dental prosthesis using intraoral digital impression and the conventional impression. Conclusion In the literature there are only few in vivo clinical studies regarding digital intraoral impressions on prepared teeth. More studies about how the experience of the operator affects the accuracy of digital impression, and about the learning curve are needed, in order to provide clinical evidence on the practical use of this technology.
{"title":"A systematic review of clinical trials on digital impression of prepared teeth","authors":"M. Pecciarini, A. Biagioni, M. Ferrari","doi":"10.23805/JO.2019.11.02.03","DOIUrl":"https://doi.org/10.23805/JO.2019.11.02.03","url":null,"abstract":"Aim The purpose of this review is to verify, in the existing literature, how many clinical studies have been conducted by performing intraoral digital impressions on prepared teeth. \u0000Materials and methods An electronic search was performed through Pubmed database, and the keywords were: “digital impression”, “intraoral digital impression”, “NOT implant”. The selection process started with a primary screening based on titles and abstracts. Afterward, full-texts were carefully read. Only studies in accordance with the inclusion criteria were selected. \u0000Results Only 16 studies dealing with the required criteria were included. Most of the studies evaluated marginal fit, impression time, dentists’ and patients’ evaluation of impressions and clinical outcome of CAD/CAM (Computer-aided design/Computer- aided manufacturing) fabricated single crown and multiple-fixed dental prosthesis using intraoral digital impression and the conventional impression. \u0000Conclusion In the literature there are only few in vivo clinical studies regarding digital intraoral impressions on prepared teeth. \u0000More studies about how the experience of the operator affects the accuracy of digital impression, and about the learning curve are needed, in order to provide clinical evidence on the practical use of this technology.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80065192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-20DOI: 10.23805/JO.2019.11.02.02
B. Ferraz, V. T. Stuani, E. Passanezi, C. Damante, S. L. Greghi, M. L. Rezende, M. S. Zangrando, A. P. Sant'ana
Aim Some of the main challenges in immediate implant placement are the lack of remaining bone for anchorage and socket decontamination in cases of teeth extracted due to infection. The objective of this case series is to describe a surgical technique that is also capable of maintaining bone architecture after extraction, while promoting the decontamination of the area and use the maximum potential of bone cells regenerative capacity. Case report Three cases were followed for periods ranging from 5 months to 5 years. An early implantation technique was used on all cases, with a waiting period of 21 days after tooth-extraction. This allows the implant placement on a new formed bone granulation tissue, rich in growth factors and osteoprogenitor cells. Results This approach allowed sites decontamination, formation of vital bone contacting the implant surface, primary stability, good three-dimensional positioning, and satisfactory prosthetic outcomes in all cases. Conclusions Implant placement on bone granulation tissue is a viable technique and should be considered as an option during treatment planning.
{"title":"Implant placement on bone granulation tissue. A case series","authors":"B. Ferraz, V. T. Stuani, E. Passanezi, C. Damante, S. L. Greghi, M. L. Rezende, M. S. Zangrando, A. P. Sant'ana","doi":"10.23805/JO.2019.11.02.02","DOIUrl":"https://doi.org/10.23805/JO.2019.11.02.02","url":null,"abstract":"Aim Some of the main challenges in immediate implant placement are the lack of remaining bone for anchorage and socket decontamination in cases of teeth extracted due to infection. The objective of this case series is to describe a surgical technique that is also capable of maintaining bone architecture after extraction, while promoting the decontamination of the area and use the maximum potential of bone cells regenerative capacity. \u0000Case report Three cases were followed for periods ranging from 5 months to 5 years. An early implantation technique was used on all cases, with a waiting period of 21 days after tooth-extraction. This allows the implant placement on a new formed bone granulation tissue, rich in growth factors and osteoprogenitor cells. \u0000Results This approach allowed sites decontamination, formation of vital bone contacting the implant surface, primary stability, good three-dimensional positioning, and satisfactory prosthetic outcomes in all cases. \u0000Conclusions Implant placement on bone granulation tissue is a viable technique and should be considered as an option during treatment planning.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79193960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-20DOI: 10.23805/JO.2019.11.02.01
C. Moreschi, M. G. Grusovin, A. Cafaro, A. Gambino, S. Abati, E. Gherlone, P. Capparé, G. Gastaldi
A Aim The present review was performed in order to assess the effect of topical photodynamic therapy with 5-ALA in pre-malignant lesions, using the Tsai’s protocol. Material and methods Studies, using the Tsai’s protocol with topical photodynamic therapy with 5-ALA, in oral potentially malignant disorders (oral leukoplakia, oral eryhtroplakia, oral verrucous leukoplakia, oral lichen planus) and with at least 5 months follow-up, were selected. The light source was: 635 nm laser light or LED red light at 635 nm. The main outcome measure was the healing of the potentially malignant disorders evaluated as Complete Response, Partial Response, No Response. Results Of the 12 eligible studies, five studies were included. Seven studies were excluded because they did not followe the Tsai’s protocol, 2 because the lesions were analyzed in other studies. The outcomes were: Oral Leucoplakia 7.7% complete response, 50.8% partial response, 41.5% no response; Oral Erythroplakia: 91,7% complete response, 8.3% partial response; Oral Verrucous Hyperplasia 100% complete response. Conclusions Within the limitation of the present systematic review, the selected studies suggested that 5-ALA PDT, using the fractionated Tsai’s protocol, had good results in the treatment of oral verrucous hyperplasia, less in erythroplakia and leukoplakia; this could be due to the different epithelial structure of the lesions. Further studies need to be conducted to confirm these data.
{"title":"Is Topical Photodynamic Therapy with 5-ALA , using Tsai’s protocol , useful in the healing of oral potentially malignant disorders? A system-atic review of the literature","authors":"C. Moreschi, M. G. Grusovin, A. Cafaro, A. Gambino, S. Abati, E. Gherlone, P. Capparé, G. Gastaldi","doi":"10.23805/JO.2019.11.02.01","DOIUrl":"https://doi.org/10.23805/JO.2019.11.02.01","url":null,"abstract":"A \u0000Aim The present review was performed in order to assess the effect of topical photodynamic therapy with 5-ALA in pre-malignant lesions, using the Tsai’s protocol. \u0000Material and methods Studies, using the Tsai’s protocol with topical photodynamic therapy with 5-ALA, in oral potentially malignant disorders (oral leukoplakia, oral eryhtroplakia, oral verrucous leukoplakia, oral lichen planus) and with at least 5 months follow-up, were selected. The light source was: 635 nm laser light or LED red light at 635 nm. The main outcome measure was the healing of the potentially malignant disorders evaluated as Complete Response, Partial Response, No Response. \u0000Results Of the 12 eligible studies, five studies were included. Seven studies were excluded because they did not followe the Tsai’s protocol, 2 because the lesions were analyzed in other studies. The outcomes were: Oral Leucoplakia 7.7% complete response, 50.8% partial response, 41.5% no response; Oral Erythroplakia: 91,7% complete response, 8.3% partial response; Oral Verrucous Hyperplasia 100% complete response. \u0000Conclusions Within the limitation of the present systematic review, the selected studies suggested that 5-ALA PDT, using the fractionated Tsai’s protocol, had good results in the treatment of oral verrucous hyperplasia, less in erythroplakia and leukoplakia; this could be due to the different epithelial structure of the lesions. Further studies need to be conducted to confirm these data.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82118660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.23805/JO.2019.11.01.06
Dhananjay Yadav, Farhan Durrani, Faizia Rahman, P. Borang, Shivam Kesarwani, S. Karthickraj
Aim The length of fixtures is always standardized with the concept for better bone to implant contact and successful osseointegration. Lots of studies have justified the use of short implants of less than 10 mm as an alternative for resorbed ridges in maxilla and mandible. The present project was conducted to check the viability of short implants in complex prosthetic rehabilitations. Materials and methods Eleven patients received a total of 18 short implants (3.3/6 mm - 4.2/9.5mm) and 18 standard implants (3.75/11 mm and 4.5/11.5 mm) in the posterior mandible. Marginal bone loss was evaluated immediately after the delivery of the prosthesis, then after 3, 6, 12 and 18 months. Same measurements were done for standard implants as the study design was split mouth. Results The survival rate of short implants 18 months after prosthesis delivery was 94.4% and it was 100% for standard implants. There was no significant difference between implants at the time intervals of 6 and 18 month’s post-delivery of crowns and bridges. Mean crestal bone loss was 1.77±0.22 mm and 2.03±0.21 mm for short and standard implants respectively at 18 months of follow up, which was statistically significant. One short implant failure was seen before the loading of prosthesis. Conclusion Short implants may be considered as an alternative for complex augmentation procedures in mandible and maybe in maxilla too. Patient should be educated before for the reduced survival rate of short implants compared to standard implants.
目的为了更好的与种植体接触和成功的骨整合，固定装置的长度一直是标准化的。大量的研究证明了使用小于10毫米的短种植体作为上颌和下颌骨吸收脊的替代方法是合理的。本项目旨在检查短种植体在复杂假肢康复中的可行性。材料与方法11例患者在后颌骨共植入短种植体18枚(3.3/6 mm ~ 4.2/9.5mm)，标准种植体18枚(3.75/11 mm、4.5/11.5 mm)。在植入假体后立即、3个月、6个月、12个月和18个月后评估边缘骨损失。对于标准种植体进行了相同的测量，因为研究设计是分口的。结果短种植体术后18个月生存率为94.4%，标准种植体术后18个月生存率为100%。在冠和桥交付后6个月和18个月的时间间隔内，种植体之间的差异无统计学意义。随访18个月时，短种植体和标准种植体的平均牙冠骨损失分别为1.77±0.22 mm和2.03±0.21 mm，差异有统计学意义。1例假体加载前短暂失效。结论短段种植体可作为上颌及下颌骨复杂隆胸手术的替代方法。与标准种植体相比，短种植体的存活率较低，因此患者应事先接受教育。
{"title":"Comparative evaluation of hard and soft tissue parameters by using short and standard dental implants for prosthetic rehabilitation of posterior mandible: a split mouth study","authors":"Dhananjay Yadav, Farhan Durrani, Faizia Rahman, P. Borang, Shivam Kesarwani, S. Karthickraj","doi":"10.23805/JO.2019.11.01.06","DOIUrl":"https://doi.org/10.23805/JO.2019.11.01.06","url":null,"abstract":"Aim The length of fixtures is always standardized with the concept for better bone to implant contact and successful osseointegration. Lots of studies have justified the use of short implants of less than 10 mm as an alternative for resorbed ridges in maxilla and mandible. The present project was conducted to check the viability of short implants in complex prosthetic rehabilitations. \u0000Materials and methods Eleven patients received a total of 18 short implants (3.3/6 mm - 4.2/9.5mm) and 18 standard implants (3.75/11 mm and 4.5/11.5 mm) in the posterior mandible. Marginal bone loss was evaluated immediately after the delivery of the prosthesis, then after 3, 6, 12 and 18 months. Same measurements were done for standard implants as the study design was split mouth. \u0000Results The survival rate of short implants 18 months after prosthesis delivery was 94.4% and it was 100% for standard implants. There was no significant difference between implants at the time intervals of 6 and 18 month’s post-delivery of crowns and bridges. Mean crestal bone loss was 1.77±0.22 mm and 2.03±0.21 mm for short and standard implants respectively at 18 months of follow up, which was statistically significant. One short implant failure was seen before the loading of prosthesis. \u0000Conclusion Short implants may be considered as an alternative for complex augmentation procedures in mandible and maybe in maxilla too. Patient should be educated before for the reduced survival rate of short implants compared to standard implants.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75970848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.23805/JO.2019.11.01.04
Serhat Köken, J. Juloski, M. Ferrari
Aim The aim was to evaluate the influence of the cervical margin relocation (CMR) and the adhesive system on the microleakage of indirect composite restorations with proximal margins located below the cemento-enamel junction (CEJ). Materials and methods Standardized MOD cavities with proximal margins located 1 mm below CEJ were prepared in 20 human molars and divided into 2 groups. Mesial margins in both groups were elevated with a flowable composite. Distal margins were not elevated. Composite CAD/CAM overlays were cemented with a resin composite; in Group 1 in combination with a universal adhesive in selective enamel etch mode, whereas in Group 2 with a three-step total-etch adhesive. Differences in leakage either at mesial or distal adhesive interface were evaluated for statistical significance (P < 0.05). Results In Group 1 statistically significant differences emerged in microleakage scores between CMR and non-CMR sites; higher scores were present at CMR sites. In Group 2 no statistically significant differences existed between CMR and non-CMR margins. When the non-CMR sites were compared between the two groups, significantly lower scores were observed in Group 1 compared to Group 2. Conclusion The CMR technique and the adhesive system employed for luting indirect restorations might represent a significant factor affecting microleakage at the interface below CEJ.
{"title":"Influence of cervical margin relocation and adhesive system on microleakage of indirect composite restorations","authors":"Serhat Köken, J. Juloski, M. Ferrari","doi":"10.23805/JO.2019.11.01.04","DOIUrl":"https://doi.org/10.23805/JO.2019.11.01.04","url":null,"abstract":"Aim The aim was to evaluate the influence of the cervical margin relocation (CMR) and the adhesive system on the microleakage of indirect composite restorations with proximal margins located below the cemento-enamel junction (CEJ). \u0000 \u0000 \u0000 \u0000Materials and methods Standardized MOD cavities with proximal margins located 1 mm below CEJ were prepared in 20 human molars and divided into 2 groups. Mesial margins in both groups were elevated with a flowable composite. Distal margins were not elevated. Composite CAD/CAM overlays were cemented with a resin composite; in Group 1 in combination with a universal adhesive in selective enamel etch mode, whereas in Group 2 with a three-step total-etch adhesive. Differences in leakage either at mesial or distal adhesive interface were evaluated for statistical significance (P < 0.05). \u0000 \u0000 \u0000 \u0000Results In Group 1 statistically significant differences emerged in microleakage scores between CMR and non-CMR sites; higher scores were present at CMR sites. In Group 2 no statistically significant differences existed between CMR and non-CMR margins. When the non-CMR sites were compared between the two groups, significantly lower scores were observed in Group 1 compared to Group 2. \u0000 \u0000 \u0000 \u0000Conclusion The CMR technique and the adhesive system employed for luting indirect restorations might represent a significant factor affecting microleakage at the interface below CEJ.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88559538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.23805/JO.2019.11.01.05
M. Trimarchi, A. Galli, P. Capparé, Sabrina Dababou, R. Vinci, M. Bussi, E. Gherlone
Introduction Odontogenic infections (OIs) are potentially severe complications resulting from untreated dental pathologies or incorrect dentistry procedures. They may involve paranasal sinuses and cervico-fascial spaces. Clinical picture can be misleading and relation with dental pathology unapparent, making their diagnosis challenging. Material and methods Data of 44 patients referred to San Raffaele Hospital (Milan) for acute severe or recalcitrant sinonasal/deep cervical OIs between January 2008 and January 2017 were retrospectively collected. Clear odontogenic origin was proved in all cases. Patient characteristics, etiopathogenesis, surgical approach and medical therapy were individually assessed. Results Main causes of OIs were implant placement (13/44, 29.6%) and caries (12/44, 27.3%), followed by dysodontiasis (8/44, 18.2%), tooth extraction (7/44, 15.9%), endodontic procedures (2/44, 4.5%) and sinus lift (2/44, 4.5%). A clear etiology was detectable in 27 patients (61.4%). Odontogenic maxillary sinusitis (32/44, 72.7%) was typically tackled by a multiportal approach, with transnasal endoscopic approaches combined with transoral ones. Cervico-fascial infections (12/44, 27.3%), instead, always required cervicotomic surgical drainage, frequently in urgent/emergent settings. A case of descending mediastinal spread was recorded. Conclusions High index of suspicion and effective collaboration between dental and ENT specialists are essential to promptly diagnose and treat OIs. Antibiogram-driven therapies and multiportal approaches are key elements of the current therapeutic strategy.
{"title":"Odontogenic infections in the head and neck: a case series","authors":"M. Trimarchi, A. Galli, P. Capparé, Sabrina Dababou, R. Vinci, M. Bussi, E. Gherlone","doi":"10.23805/JO.2019.11.01.05","DOIUrl":"https://doi.org/10.23805/JO.2019.11.01.05","url":null,"abstract":"Introduction Odontogenic infections (OIs) are potentially severe complications resulting from untreated dental pathologies or incorrect dentistry procedures. They may involve paranasal sinuses and cervico-fascial spaces. Clinical picture can be misleading and relation with dental pathology unapparent, making their diagnosis challenging. \u0000Material and methods Data of 44 patients referred to San Raffaele Hospital (Milan) for acute severe or recalcitrant sinonasal/deep cervical OIs between January 2008 and January 2017 were retrospectively collected. Clear odontogenic origin was proved in all cases. Patient characteristics, etiopathogenesis, surgical approach and medical therapy were individually assessed. \u0000Results Main causes of OIs were implant placement (13/44, 29.6%) and caries (12/44, 27.3%), followed by dysodontiasis (8/44, 18.2%), tooth extraction (7/44, 15.9%), endodontic procedures (2/44, 4.5%) and sinus lift (2/44, 4.5%). A clear etiology was detectable in 27 patients (61.4%). Odontogenic maxillary sinusitis (32/44, 72.7%) was typically tackled by a multiportal approach, with transnasal endoscopic approaches combined with transoral ones. Cervico-fascial infections (12/44, 27.3%), instead, always required cervicotomic surgical drainage, frequently in urgent/emergent settings. A case of descending mediastinal spread was recorded. \u0000Conclusions High index of suspicion and effective collaboration between dental and ENT specialists are essential to promptly diagnose and treat OIs. Antibiogram-driven therapies and multiportal approaches are key elements of the current therapeutic strategy.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76474580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.23805/JO.2019.11.01.02
S. D'amato, N. Sgaramella, G. Tartaro, M. Santagata
Aim AAA (Alveolar Antral Artery) injuries are the most frequent intra-operative lesions occurring during maxillary sinus surgery. The aim of this work is to evaluate the role of preoperative CBCT and the effectiveness of piezosurgery to prevent bleeding. Furthermore, a modified Lundgren technique is presented, that can significantly reduce the risk of bleeding and of damages to maxillary sinus structures. Methods A case of maxillary sinus lift with immediate implants placement is reported. Preoperative CBCT scan allowed to study the course in the anterior-lateral sinus wall of the AAA and the variability of its patency. Antrostomy was performed with piezosurgery device. Results Through preoperative identification of the course of the artery and trough this modified piezosurgery technique, it was possible to preserve membrane and artery integrity. Schneider membrane therefore was detached from the sinus floor, and contextually three implants were positioned. Conclusions In the preoperative phase, a study with CBCT scan is suggested, in order to identify intraosseous arterial course, patency variability and the distance from alveolar ridge. Furthermore, it is strongly recommended the use of piezosurgery, to preserve vascular structures and soft tissues. A modified Lundgren technique can be useful to avoid the use of round bur and thus reduce the risk of perforation of the underlying structures.
{"title":"A modified graftless sinus lift: case report","authors":"S. D'amato, N. Sgaramella, G. Tartaro, M. Santagata","doi":"10.23805/JO.2019.11.01.02","DOIUrl":"https://doi.org/10.23805/JO.2019.11.01.02","url":null,"abstract":"Aim AAA (Alveolar Antral Artery) injuries are the most frequent intra-operative lesions occurring during maxillary sinus surgery. The aim of this work is to evaluate the role of preoperative CBCT and the effectiveness of piezosurgery to prevent bleeding. Furthermore, a modified Lundgren technique is presented, that can significantly reduce the risk of bleeding and of damages to maxillary sinus structures. \u0000Methods A case of maxillary sinus lift with immediate implants placement is reported. Preoperative CBCT scan allowed to study the course in the anterior-lateral sinus wall of the AAA and the variability of its patency. Antrostomy was performed with piezosurgery device. \u0000Results Through preoperative identification of the course of the artery and trough this modified piezosurgery technique, it was possible to preserve membrane and artery integrity. Schneider membrane therefore was detached from the sinus floor, and contextually three implants were positioned. \u0000Conclusions In the preoperative phase, a study with CBCT scan is suggested, in order to identify intraosseous arterial course, patency variability and the distance from alveolar ridge. Furthermore, it is strongly recommended the use of piezosurgery, to preserve vascular structures and soft tissues. A modified Lundgren technique can be useful to avoid the use of round bur and thus reduce the risk of perforation of the underlying structures.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80108349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-03-01DOI: 10.23805/JO.2019.11.01.03
E. Andrikopoulou, S. Kourtis, S. Damaskos, K. Tsiklakis
Aim The aim of this study was to assess bone changes along implants after immediate or delayed loading, using subtractions of digital images originated from cropped panoramic radiographs and visual evaluation. Materials and methods Eleven patients received 4 Ankylos implants interforaminal in the mandible. In 7 patients the implants were loaded immediately and 4 followed delayed loading. All patients were restored with a telescopic overdenture with Syncone abutments. From each patient 3 panoramic radiographs (PRs) were obtained: upon delivery of the restoration (T1), 6 months later (T2) and after 3 years (T3). 33 implants were finally selected. The radiographs were analyzed using the Emago® Software. The grey scale values were measured either manually (Stage A) or automatically (Stage B) in six areas (neck, middle and apex; both mesially and distally) along the implants’ sides to evaluate the bone density during clinical function. Images were also visually evaluated by five observers to detect bone changes at the cervical implant area. Results Strong positive correlation between the two stages (A and B) was found in all 3 examinations (Pearson’s r 0.84-0.98). The t-test showed no statistically significant differences in grey level values between immediate and delayed loading (p<0.05) and no statistically significant changes in the visual evaluation among implants undergoing either immediately or delayed loading (p<0.05). Conclusions Emago® is a valuable method for bone level assessment around implants’ neck. The grey value measurements of the bone adjacent to the implants that have been loaded either immediately or delayed do not significantly differ after 3 years of fuction. The visual assessment of the PRs images supports these findings.
目的本研究的目的是评估种植体在立即或延迟加载后的骨变化，使用裁剪的全景x线照片和视觉评估的数字图像减去。材料与方法11例患者在下颌骨椎间孔内行4个踝关节植入。7例患者即刻加载，4例延迟加载。所有患者均采用带Syncone基牙的套筒覆盖义齿修复。从每位患者获得3张全景x线片(pr):在修复物交付时(T1)， 6个月后(T2)和3年后(T3)。最终选择33个植入物。使用Emago®软件分析x线片。在六个区域(颈部、中部和顶点)手动(阶段A)或自动(阶段B)测量灰度值;(近端和远端)沿种植体两侧评估临床功能期间的骨密度。图像也由五名观察员进行视觉评估，以检测颈椎种植体区域的骨变化。结果3项检查中A、B两阶段均呈显著正相关(Pearson’s r 0.84 ~ 0.98)。t检验显示，即刻和延迟加载的灰度值差异无统计学意义(p<0.05)，即刻和延迟加载的视觉评价差异无统计学意义(p<0.05)。结论Emago®是评估种植体颈部周围骨水平的有效方法。即刻或延迟加载的种植体相邻骨的灰值测量在功能3年后没有显著差异。对pr图像的视觉评估支持了这些发现。
{"title":"Detecting bone changes along dental implants, after immediate or delayed loading, using digital subtraction on cropped panoramic radiographs. A prospective clinical trial with minimum 3-year follow up","authors":"E. Andrikopoulou, S. Kourtis, S. Damaskos, K. Tsiklakis","doi":"10.23805/JO.2019.11.01.03","DOIUrl":"https://doi.org/10.23805/JO.2019.11.01.03","url":null,"abstract":"Aim The aim of this study was to assess bone changes along implants after immediate or delayed loading, using subtractions of digital images originated from cropped panoramic radiographs and visual evaluation. \u0000Materials and methods Eleven patients received 4 Ankylos implants interforaminal in the mandible. In 7 patients the implants were loaded immediately and 4 followed delayed loading. All patients were restored with a telescopic overdenture with Syncone abutments. From each patient 3 panoramic radiographs (PRs) were obtained: upon delivery of the restoration (T1), 6 months later (T2) and after 3 years (T3). 33 implants were finally selected. The radiographs were analyzed using the Emago® Software. The grey scale values were measured either manually (Stage A) or automatically (Stage B) in six areas (neck, middle and apex; both mesially and distally) along the implants’ sides to evaluate the bone density during clinical function. Images were also visually evaluated by five observers to detect bone changes at the cervical implant area. \u0000Results Strong positive correlation between the two stages (A and B) was found in all 3 examinations (Pearson’s r 0.84-0.98). The t-test showed no statistically significant differences in grey level values between immediate and delayed loading (p<0.05) and no statistically significant changes in the visual evaluation among implants undergoing either immediately or delayed loading (p<0.05). \u0000Conclusions Emago® is a valuable method for bone level assessment around implants’ neck. The grey value measurements of the bone adjacent to the implants that have been loaded either immediately or delayed do not significantly differ after 3 years of fuction. The visual assessment of the PRs images supports these findings.","PeriodicalId":42724,"journal":{"name":"Journal of Osseointegration","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81845025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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