A. Patankar, R. Kshirsagar, S. Patankar, Rakhi S Purkayastha, S. Pawar, K. Nair
Aim: The aim of this study is to evaluate the radiographic assessment of alveolar bone loss around customized root analog zirconia implants placed in fresh extraction sockets using the cone-beam computed tomography at predetermined intervals. Subjects and Methods: The present study comprised twenty individuals all above 18 years with at least one tooth indicated for extraction. The twenty participants were considered in a single group who underwent single tooth extraction followed by the placement of root analog zirconia implant after 7 days which was fabricated using computer-aided design and computer-aided manufacturing technology. The participants were evaluated radiographically using Cone-Beam Computed Tomography (CBCT) at predetermined intervals: • Within 48 h of implant placement (CBCT I) • At the time of composite crown cementation on zirconia implant after 4 months of placement (CBCT II) • After 4 months of composite crown cementation (CBCT III). The alveolar bone loss was measured on all the four surfaces of the implant. CBCT was used only for the required area so to avoid total radiation exposure to the patient. Statistical Analysis Used: The survival of dental implants was computed using the Kaplan–Meier method. The comparison of the mesial, distal, buccal, and lingual bone height at 3 different time intervals was analyzed using the repeated-measures analysis of variance. Results: Radiographic assessment of alveolar bone loss around customized root analog zirconia implants placed in fresh extraction sockets in predetermined time interval using the cone-beam computed tomography (CBCT) was taken to be statistically significant (P ≤ 0.05). Conclusions: An innovative technique for immediate replacement of extracted tooth using customized Zirconia root analog implant was introduced. In future, long-term evaluation with more sample size is necessary to assess the success and survival of implant placed using this technique.
{"title":"Radiographic assessment of alveolar bone loss around customized root analog zirconia implants placed in fresh extraction sockets","authors":"A. Patankar, R. Kshirsagar, S. Patankar, Rakhi S Purkayastha, S. Pawar, K. Nair","doi":"10.4103/jdi.jdi_13_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_13_21","url":null,"abstract":"Aim: The aim of this study is to evaluate the radiographic assessment of alveolar bone loss around customized root analog zirconia implants placed in fresh extraction sockets using the cone-beam computed tomography at predetermined intervals. Subjects and Methods: The present study comprised twenty individuals all above 18 years with at least one tooth indicated for extraction. The twenty participants were considered in a single group who underwent single tooth extraction followed by the placement of root analog zirconia implant after 7 days which was fabricated using computer-aided design and computer-aided manufacturing technology. The participants were evaluated radiographically using Cone-Beam Computed Tomography (CBCT) at predetermined intervals: • Within 48 h of implant placement (CBCT I) • At the time of composite crown cementation on zirconia implant after 4 months of placement (CBCT II) • After 4 months of composite crown cementation (CBCT III). The alveolar bone loss was measured on all the four surfaces of the implant. CBCT was used only for the required area so to avoid total radiation exposure to the patient. Statistical Analysis Used: The survival of dental implants was computed using the Kaplan–Meier method. The comparison of the mesial, distal, buccal, and lingual bone height at 3 different time intervals was analyzed using the repeated-measures analysis of variance. Results: Radiographic assessment of alveolar bone loss around customized root analog zirconia implants placed in fresh extraction sockets in predetermined time interval using the cone-beam computed tomography (CBCT) was taken to be statistically significant (P ≤ 0.05). Conclusions: An innovative technique for immediate replacement of extracted tooth using customized Zirconia root analog implant was introduced. In future, long-term evaluation with more sample size is necessary to assess the success and survival of implant placed using this technique.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131532389","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}
G. Sethna, R. Gaikwad, R. Nahar, Satish Gadai, Noopur Narayane
Dental implants play a pivotal role in the rehabilitation of missing teeth and have been revolutionary in the field of dentistry. However, clinical and biological complications may be associated with dental implants and may occur primarily due to bacterial infection in the soft and hard tissue around the implants. These are known as peri-implant mucositis and peri-implantitis. Management of peri-implant and peri-apical infections, so as to achieve re-osseointegration of the exposed implant surfaces, is often challenging for the treating dentist. Various treatment modalities of peri-implant diseases include nonsurgical and surgical therapy. This case report describes successful management and a 2-year follow-up of a case of advanced peri-implantitis using a protocol that involves thorough debridement, decontamination, and guided bone regeneration.
{"title":"Successful management of advanced peri-implantitis with guided bone regeneration: A case report with a 2-year follow-up","authors":"G. Sethna, R. Gaikwad, R. Nahar, Satish Gadai, Noopur Narayane","doi":"10.4103/jdi.jdi_12_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_12_21","url":null,"abstract":"Dental implants play a pivotal role in the rehabilitation of missing teeth and have been revolutionary in the field of dentistry. However, clinical and biological complications may be associated with dental implants and may occur primarily due to bacterial infection in the soft and hard tissue around the implants. These are known as peri-implant mucositis and peri-implantitis. Management of peri-implant and peri-apical infections, so as to achieve re-osseointegration of the exposed implant surfaces, is often challenging for the treating dentist. Various treatment modalities of peri-implant diseases include nonsurgical and surgical therapy. This case report describes successful management and a 2-year follow-up of a case of advanced peri-implantitis using a protocol that involves thorough debridement, decontamination, and guided bone regeneration.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123019752","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}
R. Krishnaprabhu, R. Shadamarshan, S. R. Roy Chowdhury
Context: Implant-retained prosthodontic rehabilitation of the posterior maxilla poses a unique challenge due to deficiency in bony characteristics in many cases, thereby requiring elaborate adjunctive surgical procedures to aid in implant placement. Aims: We aimed to evaluate the efficacy of hybrid implants in the prosthodontic rehabilitation of edentulous posterior maxilla. Subjects and Methods: Prospective clinical evaluation of 27 patients (30 implants) rehabilitated using hybrid implants at 1 and 4 weeks after implant placement and 3, 6, and 12 months after functional loading was conducted. Statistical Analysis Used: Descriptive statistics were used for statistical analysis. Results: The average pain score on the Visual Analog Scale was 4.53 and 0.76 at the end of 1st week and 4 weeks. Four implants (13.33%) were found unstable by 4 weeks. Two implants (6.67%) had exposure by 12 months. Less than 1 mm of mobility was seen in one implant (3.33%) by 3 months, four implants (13.33%) by 6 months, and five implants (16.67%) by 12 months. One implant (3.33%) developed mobility up to 2 mm by 12 months. Seven implants (23.33%) showed a probing depth of ≥5 mm but none more than 6 mm. Gingival recession of 2 and 3 mm was seen in two implants (6.67%) and one implant (3.33%), respectively, at the end of 12 months. The average bone loss was 0.17, 0.31, and 0.46 mm by 3, 6, and 12 months. The average rate of bone loss was 0.02 mm per month. Conclusions: Hybrid implant is an excellent alternative in patients with inadequate bone in the posterior maxilla precluding the requirement of maxillary sinus lift and grafting.
{"title":"Hybrid implants in the dental rehabilitation of posterior maxilla: A prospective clinical evaluation","authors":"R. Krishnaprabhu, R. Shadamarshan, S. R. Roy Chowdhury","doi":"10.4103/jdi.jdi_17_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_17_21","url":null,"abstract":"Context: Implant-retained prosthodontic rehabilitation of the posterior maxilla poses a unique challenge due to deficiency in bony characteristics in many cases, thereby requiring elaborate adjunctive surgical procedures to aid in implant placement. Aims: We aimed to evaluate the efficacy of hybrid implants in the prosthodontic rehabilitation of edentulous posterior maxilla. Subjects and Methods: Prospective clinical evaluation of 27 patients (30 implants) rehabilitated using hybrid implants at 1 and 4 weeks after implant placement and 3, 6, and 12 months after functional loading was conducted. Statistical Analysis Used: Descriptive statistics were used for statistical analysis. Results: The average pain score on the Visual Analog Scale was 4.53 and 0.76 at the end of 1st week and 4 weeks. Four implants (13.33%) were found unstable by 4 weeks. Two implants (6.67%) had exposure by 12 months. Less than 1 mm of mobility was seen in one implant (3.33%) by 3 months, four implants (13.33%) by 6 months, and five implants (16.67%) by 12 months. One implant (3.33%) developed mobility up to 2 mm by 12 months. Seven implants (23.33%) showed a probing depth of ≥5 mm but none more than 6 mm. Gingival recession of 2 and 3 mm was seen in two implants (6.67%) and one implant (3.33%), respectively, at the end of 12 months. The average bone loss was 0.17, 0.31, and 0.46 mm by 3, 6, and 12 months. The average rate of bone loss was 0.02 mm per month. Conclusions: Hybrid implant is an excellent alternative in patients with inadequate bone in the posterior maxilla precluding the requirement of maxillary sinus lift and grafting.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124211624","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}
Long-standing edentulous cases due to missing permanent mandibular first molars commonly result in mesial tipping and migration of second molars in the edentulous space. In order to place an optimum-sized dental implant and crown for replacement of the missing tooth space regaining by uprighting and distalization of the second molar is essential. Various orthodontic techniques using fully bonded fixed appliances and segmental orthodontics with coil springs, loops, and miniscrew orthodontic implants have been used for space regaining. Obtaining three-dimensional control during tooth movement in segmental orthodontics is challenging as all the forces are applied to the teeth buccally. This case report shows a method to regain space using a long head miniscrew orthodontic implant placed at the retromolar pad area with three-dimensional control during second molar uprighting and distalization followed by restoration with a dental implant.
{"title":"Management of long-standing edentulous space with dental implants: An interdisciplinary approach","authors":"A. Naidu, Monish Naidu","doi":"10.4103/jdi.jdi_8_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_8_21","url":null,"abstract":"Long-standing edentulous cases due to missing permanent mandibular first molars commonly result in mesial tipping and migration of second molars in the edentulous space. In order to place an optimum-sized dental implant and crown for replacement of the missing tooth space regaining by uprighting and distalization of the second molar is essential. Various orthodontic techniques using fully bonded fixed appliances and segmental orthodontics with coil springs, loops, and miniscrew orthodontic implants have been used for space regaining. Obtaining three-dimensional control during tooth movement in segmental orthodontics is challenging as all the forces are applied to the teeth buccally. This case report shows a method to regain space using a long head miniscrew orthodontic implant placed at the retromolar pad area with three-dimensional control during second molar uprighting and distalization followed by restoration with a dental implant.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124262669","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}
{"title":"Bone loss around implants: Is it inevitable, preventable, irreversible, or untreatable?","authors":"S. Shetty","doi":"10.4103/jdi.jdi_32_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_32_21","url":null,"abstract":"","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133230502","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}
The peri-implant tissue remodeling just after implant surgery forms a coagulum that occupies the space between mucosa and implant. This is invaded by neutrophils and a barrier forms around implant consisting of dense fibrin network. In another 2 weeks post surgery, it is replaced by connective tissue and vascular structures. In the crestal area, the proliferation of epithelium takes place and forms a junctional epithelium. The barrier epithelium around the implant matures in 6–8 weeks. Formation of biological width begins when the implant gets exposed to the oral environment. This could be through healing screw or prosthetic abutment depending on connection to the implant. It is said that thin or thick tissues have different approaches to healing as the blood supply is varied. Flap is raised during the second stage of implant surgery damaging the blood supply of surrounding tissues. Thin mucosa present around the implant crestal area might lead to more bone loss but not thick tissues as more blood vessels are present here. Bone turnover can lead to crestal bone loss up to 3.2 mm apical to soft-tissue margin. The thickness of the tissues may be a recognized biological factor that might lead to crestal bone stability. In this report, we describe three cases where bone remodeling was camouflaged by thick soft tissues around implant-supported restorations.
{"title":"Thick soft tissues around implant-supported restoration; stable crestal bone levels?","authors":"Farhan Durrani, Samidha Pandey, Rakhshinda Nahid, Preeti Singh, Aishwarya Pandey","doi":"10.4103/jdi.jdi_29_20","DOIUrl":"https://doi.org/10.4103/jdi.jdi_29_20","url":null,"abstract":"The peri-implant tissue remodeling just after implant surgery forms a coagulum that occupies the space between mucosa and implant. This is invaded by neutrophils and a barrier forms around implant consisting of dense fibrin network. In another 2 weeks post surgery, it is replaced by connective tissue and vascular structures. In the crestal area, the proliferation of epithelium takes place and forms a junctional epithelium. The barrier epithelium around the implant matures in 6–8 weeks. Formation of biological width begins when the implant gets exposed to the oral environment. This could be through healing screw or prosthetic abutment depending on connection to the implant. It is said that thin or thick tissues have different approaches to healing as the blood supply is varied. Flap is raised during the second stage of implant surgery damaging the blood supply of surrounding tissues. Thin mucosa present around the implant crestal area might lead to more bone loss but not thick tissues as more blood vessels are present here. Bone turnover can lead to crestal bone loss up to 3.2 mm apical to soft-tissue margin. The thickness of the tissues may be a recognized biological factor that might lead to crestal bone stability. In this report, we describe three cases where bone remodeling was camouflaged by thick soft tissues around implant-supported restorations.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132894134","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}
Purpose: The purpose of the study was to analyze and compare the stress distribution in the so-called All-on-Four concept where two anterior implants were placed parallel to each other and two posterior implants were tilted at 45° angle against the four parallelly placed implants within the interforaminal distance in an edentulous mandible. Materials and Methods: The three-dimensional finite element analysis models consisted of cancellous bone surrounded by the cortical bone, four dental implants positioned in two different designs – i.e., four parallelly placed implants (Model 1) and All-on-Four concept (Model 2) with hybrid superstructures comprising of a Hader bar. The vertical (60N, 130N, and 300N) and lateral (20N, 45N, and 100N) loading protocols were considered and von Mises stress values were determined. Results: On vertical and lateral loading, lower stress concentrations were observed in the peri-implant region in Model 2. However, there was higher stress concentration noticed on cortical, cancellous bone and bar attachment due to the tilting of implants in every condition. Conclusion: Within the limitations of the study, All-on-Four concept is an optimal and viable treatment option if executed accurately as it reduces the cantilever length, reduces stress concentrations in the peri-implant region, and is cost-effective.
{"title":"The analysis of the stress distribution around angulated and parallelly placed implants based on “all on 4 concept” and four implants placed parallel within the interforaminal distance in an edentulous mandible – An in vitro three-dimensional finite element analysis","authors":"Minal Mahantshetty, Prafulla Thumati, Mounika Ayinala","doi":"10.4103/jdi.jdi_28_20","DOIUrl":"https://doi.org/10.4103/jdi.jdi_28_20","url":null,"abstract":"Purpose: The purpose of the study was to analyze and compare the stress distribution in the so-called All-on-Four concept where two anterior implants were placed parallel to each other and two posterior implants were tilted at 45° angle against the four parallelly placed implants within the interforaminal distance in an edentulous mandible. Materials and Methods: The three-dimensional finite element analysis models consisted of cancellous bone surrounded by the cortical bone, four dental implants positioned in two different designs – i.e., four parallelly placed implants (Model 1) and All-on-Four concept (Model 2) with hybrid superstructures comprising of a Hader bar. The vertical (60N, 130N, and 300N) and lateral (20N, 45N, and 100N) loading protocols were considered and von Mises stress values were determined. Results: On vertical and lateral loading, lower stress concentrations were observed in the peri-implant region in Model 2. However, there was higher stress concentration noticed on cortical, cancellous bone and bar attachment due to the tilting of implants in every condition. Conclusion: Within the limitations of the study, All-on-Four concept is an optimal and viable treatment option if executed accurately as it reduces the cantilever length, reduces stress concentrations in the peri-implant region, and is cost-effective.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123892733","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}
Tejhas Agarwaal, Amit K Jagtap, Nilesh Bulbule, Vaibhav Jathar
Partial rehabilitation in the posterior edentulous region remains a challenge due to the anatomical condition present in the area. Excessive pneumatization of the maxillary sinus and accentuated bone crest resorption following teeth extraction cause bone atrophy and may lead to impossibility of inserting standard implants. Constant efforts are aiming at the reduction of the invasiveness of implant surgery. This has led to increase the use of implants with shorter length in the posterior maxilla and mandible region which reduces the need for additional surgical procedure causing less morbidity of the site and faster healing of the region. Does crown to implant ratio has an effect on the marginal bone loss (MBL) around implants in the posterior maxillary and mandibular region? A systematic search was conducted on two databases for the studies published from January 1, 2006, to July 31, 2018. Cross-references were checked. Hand searching was done in the library. Studies were included if they were done among healthy, nonhospitalized individual, and compared for the crown-to-implant ratio and MBL. A total of 143 articles were found through search. Thirteen articles remained after removing duplicates, reading the full text and reviewing abstracts. Thirteen articles were included for the data extraction. Crown-to-implant ratio has no role in the crestal bone loss, but other factors need to be evaluated for its role along with crown-to-implant ratio that can cause the MBL.
{"title":"Comparative evaluation of effect of three different crown to implant ratio on marginal bone loss: A systematic review","authors":"Tejhas Agarwaal, Amit K Jagtap, Nilesh Bulbule, Vaibhav Jathar","doi":"10.4103/jdi.jdi_5_20","DOIUrl":"https://doi.org/10.4103/jdi.jdi_5_20","url":null,"abstract":"Partial rehabilitation in the posterior edentulous region remains a challenge due to the anatomical condition present in the area. Excessive pneumatization of the maxillary sinus and accentuated bone crest resorption following teeth extraction cause bone atrophy and may lead to impossibility of inserting standard implants. Constant efforts are aiming at the reduction of the invasiveness of implant surgery. This has led to increase the use of implants with shorter length in the posterior maxilla and mandible region which reduces the need for additional surgical procedure causing less morbidity of the site and faster healing of the region. Does crown to implant ratio has an effect on the marginal bone loss (MBL) around implants in the posterior maxillary and mandibular region? A systematic search was conducted on two databases for the studies published from January 1, 2006, to July 31, 2018. Cross-references were checked. Hand searching was done in the library. Studies were included if they were done among healthy, nonhospitalized individual, and compared for the crown-to-implant ratio and MBL. A total of 143 articles were found through search. Thirteen articles remained after removing duplicates, reading the full text and reviewing abstracts. Thirteen articles were included for the data extraction. Crown-to-implant ratio has no role in the crestal bone loss, but other factors need to be evaluated for its role along with crown-to-implant ratio that can cause the MBL.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121449118","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}
Prosthodontic implant rehabilitation remains one of the most complex restorative challenges because of the most usual troubles with regard to the lack of adequate treatment planning. Position, angulation, implant diameter, and length of an implant need to be determined before the surgical procedure is planned. This article briefs about the novel technique of presurgical mock up of implant site and evaluation of implants – Position, angulation, and complexity of procedure on the study model.
{"title":"Computed tomography guided mock up driven designing of implant surgical guide: A novel technique","authors":"Santosh Nelogi, M. Nelogi, K. Rachana","doi":"10.4103/jdi.jdi_30_20","DOIUrl":"https://doi.org/10.4103/jdi.jdi_30_20","url":null,"abstract":"Prosthodontic implant rehabilitation remains one of the most complex restorative challenges because of the most usual troubles with regard to the lack of adequate treatment planning. Position, angulation, implant diameter, and length of an implant need to be determined before the surgical procedure is planned. This article briefs about the novel technique of presurgical mock up of implant site and evaluation of implants – Position, angulation, and complexity of procedure on the study model.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133827842","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}
N. Padhye, V. Shirsekar, P. Bhange, S. Nikam, A. Marathe
Purpose: Maxillary sinus pneumatization is usually noted after posterior teeth extraction. The pneumatization occurs at the expense of the alveolar bone and may compromise the residual ridge dimensions for further procedures. This article aimed to assess three dimensionally the linear and volumetric changes of the maxillary sinus following posterior teeth extraction using a split mouth study design. Materials and Methods: Fifty cone-beam computed tomography (CBCT) scans with unilateral missing molar(s) or premolar(s) were assessed. Linear craniocaudal measurement from the orbital floor to the maxillary alveolar ridge was noted, and the sinus volume was measured using 3Diagnosys software (v3.1, 3Diemme, Cantu, Italy) and compared between the test and control side. Statistical analysis was performed using a paired Student's t-test. Results: Linear dimensions of the maxillary sinus increased from 33.12 (±3.99) mm on the control side to 33.34 (±3.95) mm on the test side (P = 0.0005). An increase in the volume from 13.78 (±2.55) ml to 13.99 (±2.61) ml was observed in the control and test side, respectively (P = 0.0002). Conclusion: A significant increase in sinus dimension and volume is seen after posterior teeth extraction. This may hinder further implant-supported rehabilitative procedures in this region.
{"title":"Three-dimensional linear and volumetric assessment of the maxillary sinus following posterior teeth extraction with implications for dental implant: A split mouth cross-sectional cone-beam computed tomographic study","authors":"N. Padhye, V. Shirsekar, P. Bhange, S. Nikam, A. Marathe","doi":"10.4103/jdi.jdi_18_20","DOIUrl":"https://doi.org/10.4103/jdi.jdi_18_20","url":null,"abstract":"Purpose: Maxillary sinus pneumatization is usually noted after posterior teeth extraction. The pneumatization occurs at the expense of the alveolar bone and may compromise the residual ridge dimensions for further procedures. This article aimed to assess three dimensionally the linear and volumetric changes of the maxillary sinus following posterior teeth extraction using a split mouth study design. Materials and Methods: Fifty cone-beam computed tomography (CBCT) scans with unilateral missing molar(s) or premolar(s) were assessed. Linear craniocaudal measurement from the orbital floor to the maxillary alveolar ridge was noted, and the sinus volume was measured using 3Diagnosys software (v3.1, 3Diemme, Cantu, Italy) and compared between the test and control side. Statistical analysis was performed using a paired Student's t-test. Results: Linear dimensions of the maxillary sinus increased from 33.12 (±3.99) mm on the control side to 33.34 (±3.95) mm on the test side (P = 0.0005). An increase in the volume from 13.78 (±2.55) ml to 13.99 (±2.61) ml was observed in the control and test side, respectively (P = 0.0002). Conclusion: A significant increase in sinus dimension and volume is seen after posterior teeth extraction. This may hinder further implant-supported rehabilitative procedures in this region.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115931740","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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