Thomas Connert1, Ralf Krug2, Florin Eggmann3, Isabel Emsermann3, Ashraf ElAyouti4, Roland Weiger3, Sebastian Kühl5, Gabriel Krastl2. 1. Department of Periodontology, Endodontology and Cariology, University Centre for Dental Medicine, University of Basel, Basel, Switzerland. Electronic address: thomas.connert@unibas.ch. 2. Department of Operative Dentistry and Periodontology, University of Würzburg, Würzburg, Germany. 3. Department of Periodontology, Endodontology and Cariology, University Centre for Dental Medicine, University of Basel, Basel, Switzerland. 4. Division of Endodontology, Department of Conservative Dentistry, School of Dental Medicine, University of Tübingen, Tübingen, Germany. 5. Department of Oral Surgery, Oral Radiology and Oral Medicine, University Centre for Dental Medicine, University of Basel, Basel, Switzerland.
Abstract
INTRODUCTION: The aim of this in vitro study was to compare endodontic access cavities in teeth with calcified root canals prepared with the conventional technique and a guided endodontics approach regarding the detection of root canals, substance loss, and treatment duration. METHODS: Six identical sets of upper and lower jaw models were produced with 3-dimensional-printed incisors that had simulated calcified root canals. Splints for guided access preparations were fabricated based on 3-dimensional surface scans and cone-beam computed tomographic data sets. Under simulated clinical conditions, 3 operators with different levels of experience prepared access cavities on each front tooth with the conventional technique and guided endodontics (8 teeth per technique and operator). Access cavities were volumetrically assessed on postoperative cone-beam computed tomographic scans. Statistical significance was tested by examining the overlap of 95% confidence intervals (CIs). RESULTS: Canal location was successful in 10 of 24 cases (41.7%) using the conventional technique and 22 of 24 cases (91.7%) with the guided approach. The mean substance loss of the conventional access and the guided access was 49.9 mm3 (95% CI, 42.2-57.6 mm3) and 9.8 mm3 (95% CI, 6.8-12.9 mm3), respectively. The treatment lasted 21.8 minutes (95% CI, 15.9-27.7 minutes) for the conventional technique and 11.3 minutes (95% CI, 6.7-15.9 minutes) for guided endodontics. The success of the guided approach was not influenced by the experience of the operator. CONCLUSIONS: Guided endodontics allows a more predictable and expeditious location and negotiation of calcified root canals with significantly less substance loss.
INTRODUCTION: The aim of this in vitro study was to compare endodontic access cavities in teeth with calcified root canals prepared with the conventional technique and a guided endodontics approach regarding the detection of root canals, substance loss, and treatment duration. METHODS: Six identical sets of upper and lower jaw models were produced with 3-dimensional-printed incisors that had simulated calcified root canals. Splints for guided access preparations were fabricated based on 3-dimensional surface scans and cone-beam computed tomographic data sets. Under simulated clinical conditions, 3 operators with different levels of experience prepared access cavities on each front tooth with the conventional technique and guided endodontics (8 teeth per technique and operator). Access cavities were volumetrically assessed on postoperative cone-beam computed tomographic scans. Statistical significance was tested by examining the overlap of 95% confidence intervals (CIs). RESULTS: Canal location was successful in 10 of 24 cases (41.7%) using the conventional technique and 22 of 24 cases (91.7%) with the guided approach. The mean substance loss of the conventional access and the guided access was 49.9 mm3 (95% CI, 42.2-57.6 mm3) and 9.8 mm3 (95% CI, 6.8-12.9 mm3), respectively. The treatment lasted 21.8 minutes (95% CI, 15.9-27.7 minutes) for the conventional technique and 11.3 minutes (95% CI, 6.7-15.9 minutes) for guided endodontics. The success of the guided approach was not influenced by the experience of the operator. CONCLUSIONS: Guided endodontics allows a more predictable and expeditious location and negotiation of calcified root canals with significantly less substance loss.
Authors: Alexandra Vinagre; Catarina Castanheira; Ana Messias; Paulo J Palma; João C Ramos Journal: Medicina (Kaunas) Date: 2021-11-12 Impact factor: 2.430
Authors: Wojciech Dąbrowski; Wiesława Puchalska; Adam Ziemlewski; Iwona Ordyniec-Kwaśnica Journal: Int J Environ Res Public Health Date: 2022-08-12 Impact factor: 4.614