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Forensic facial reconstruction using CBCT: A systematic review. 基于CBCT的法医面部重建:系统回顾。

Stomatologija Pub Date : 2021-04-20 DOI: 10.21203/rs.3.rs-437016/v2

Jijin Mekkadath Jayakrishnan

{"title":"Forensic facial reconstruction using CBCT: A systematic review.","authors":"Jijin Mekkadath Jayakrishnan","doi":"10.21203/rs.3.rs-437016/v2","DOIUrl":"https://doi.org/10.21203/rs.3.rs-437016/v2","url":null,"abstract":"BACKGROUND\u0000Forensic facial reconstruction is a technique to reconstruct human face from unidentified skull remains for human identification and facial recognition. Some of the methods of reconstruction is using 2D methods, 3D clay models and computerized craniofacial forensic reconstructions (CCFR). Although beneficial they are limited by meticulous and time consuming processiy. However, in 3D imaging cone beam computed tomography (CBCT) is an excellent alternative. Hence, this systematic review evaluated whether CBCT is a better diagnostic tool in facial forensic reconstruction compared to conventional 2D and 3D methods of facial reconstruction.\u0000\u0000\u0000RESULTS\u0000Article selection and data extraction was done based on the inclusion and exclusion criteria devised for the study. The articles were screened from Pub Med, ProQuest, Google scholar, Science direct and Scopus. Three hundred and thirty-nine articles were initially identified from which seven articles were full text reviewed and included in the review. All the articles included in this study suggest that the facial reconstruction done using CBCT are reliable.\u0000\u0000\u0000CONCLUSION\u0000The computerized 3D modeling method produces reliable facial reconstructions which involves the images scanned from CBCT and the combination method. The computerized 3D modeling method produces facial reconstruction which almost mimics the original resemblance.","PeriodicalId":94215,"journal":{"name":"Stomatologija","volume":"30 1","pages":"49-55"},"PeriodicalIF":0.0,"publicationDate":"2021-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76689286","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}

引用次数: 0

Simvastatin in polymer bioscaffold for bone regeneration. An in vitro and in vivo analysis. 聚合物生物支架中的辛伐他汀用于骨再生。体外和体内分析。

Stomatologija Pub Date : 2021-01-01

Swati Swati, Pratibha Gopalkrishna, Usha Yogendra Nayak, Kishore Ginjupalli, Thayyil Sivaraman Hrishi, Chetana Chandrashekar, Raghu A R, Pallavi K, Lakshmi P

{"title":"Simvastatin in polymer bioscaffold for bone regeneration. An in vitro and in vivo analysis.","authors":"Swati Swati, Pratibha Gopalkrishna, Usha Yogendra Nayak, Kishore Ginjupalli, Thayyil Sivaraman Hrishi, Chetana Chandrashekar, Raghu A R, Pallavi K, Lakshmi P","doi":"","DOIUrl":"","url":null,"abstract":"Objective: The study aimed to fabricate and test the biocompatibility of a polylactic-co-glycolic acid (PLGA) based guided tissue regeneration membrane impregnated with 'simvastatin' to promote sustained drug delivery near osseous defects and evaluate the regenerative potential of the membrane histologically.Materials and methods: We tested the mechanical properties and cytotoxicity of an indigenously fabricated PLGA membrane incorporated with simvastatin (1 mg/cm2). An animal study evaluated the regenerative potential of the membrane. Twenty-four adult Wistar rats, approximately 175 g in weight, were used in this study. The rats were divided randomly into four groups based on the postoperative healing periods into ten days, 1, 3, and 6 months. Within each time group, six rats were divided into three subgroups: Subgroup A - sham surgery controls; Subgroup B - PLGA without Simvastatin; Subgroup C - PLGA with simvastatin tests. The radiographic examination intervals were ten days, 1 and 3 months, while the histological assessment was around 1, 3, and 6 months.Results: Simvastatin content was distributed uniformly in all the prepared membranes and was equivalent to 1 mg/cm2. 100 mg PLGA membrane with simvastatin demonstrated uniform drug release over time, excellent mechanical properties, and biocompatibility. The rat models in Subgroup C had better bone tissue formation radiographically and histologically.Conclusion: The study suggested that 'PLGA with Simvastatin' has the requisite properties to serve as a third-generation barrier membrane with the potential for local drug delivery.","PeriodicalId":94215,"journal":{"name":"Stomatologija","volume":"23 4","pages":"114-120"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41168515","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}

引用次数: 0

Effects of fruit drinks on surface roughness of two esthetic restorative materials. 果汁饮料对两种美学修复材料表面粗糙度的影响。

Stomatologija Pub Date : 2017-10-31 DOI: 10.21474/IJAR01/5626

F. Abdelmegid, F. Salama, Mohammad M Al-Jameel, Talal T Al-Rasheed, M. El-Sharawy

{"title":"Effects of fruit drinks on surface roughness of two esthetic restorative materials.","authors":"F. Abdelmegid, F. Salama, Mohammad M Al-Jameel, Talal T Al-Rasheed, M. El-Sharawy","doi":"10.21474/IJAR01/5626","DOIUrl":"https://doi.org/10.21474/IJAR01/5626","url":null,"abstract":"OBJECTIVES\u0000Restorative materials may be exposed in the oral cavity to chemical agents found in beverages, which may lead to their biodegradation. The purpose of this in vitro study was to evaluate the effect of two fruit drinks commonly used by children on surface roughness of two esthetic restorative materials.\u0000\u0000\u0000MATERIALS AND METHODS\u0000One resin composite (RC), one resin-modified glass ionomer (RMGI) and two fruit drinks (orange and cocktail) were used in this study. Specimens (n=20) of each material were fabricated against Mylar strip. Baseline measurements of surface roughness were recorded for each group using noncontact surface profilometer. Each specimen was placed in the tested fruit drinks for 24 hours and then surface roughness was recorded.\u0000\u0000\u0000RESULTS\u0000The mean (±SD) surface roughness of RC before and after immersion in orange and cocktail were 0.04±0.02, 0.12±0.05, 0.06±0.03 and 0.11±0.06, respectively and for RMGI were 0.72±0.14, 0.60±0.19, 0.56±0.11, and 0.52±0.15. For RC there was significant difference between surface roughness (Sa) before and after immersion in orange and cocktail (P<0.05). For RMGI, there was significant difference between surface roughness before and after immersion in orange (P<0.05), but no significant difference before and after immersion in cocktail (P>0.05).\u0000\u0000\u0000CONCLUSIONS\u0000The surface roughness of the RC and RMGI examined showed a significant change in the surface roughness after immersion for 24 hours in the tested fruit drinks.","PeriodicalId":94215,"journal":{"name":"Stomatologija","volume":"44 1","pages":"47-52"},"PeriodicalIF":0.0,"publicationDate":"2017-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81553047","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}

引用次数: 3

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