The aim of this study was to evaluate apical transportation and apical root canal sealing after root canal filling in human teeth prepared with MTwo® Rotary System with and without apical foramen enlargement. Twenty mandibular premolars were divided into two groups (n=10). Group 1 had root canals prepared 1mm beyond the apical foramen. Group 2 had root canals prepared 1mm below the root canal length. After chemo-mechanical preparation, samples were submitted to scanning electronic microscopy. Apical foramen images had 75x magnification at standardized positions, allowing measurements from the apical foramen area before and after root canal preparation, and after root canal filling. Apical foramen shape and apical transportation, as well as its level of circumferential filling after root canal preparation were accessed using the Image Subtraction System. Scanning electronic microscopy analysis demonstrated that samples of Group 1 showed larger foraminal diameter than samples of Group 2 (p<0.05). Apical foramen transportation was statistically different between Groups 1 and 2 (p=0.0108). Furthermore, the apical foramen sealing also differed statistically between groups 1 and 2 (p=0.0007) and 100% of samples of Group 1 showed apical root canal sealing. Apical root canal sealing was more effective when the root canal was prepared with apical foramen enlargement, even when the apical transportation was detected.
Since the 1970, dental rehabilitation of partially or totally edentulous patients has been an increasingly used practice, due to improved materials and methods and high rates of survival and success. Objective: This study aimed to evaluate patients from the Faculty of Dentistry of the University of Passo Fundo, between 2015 and 2018, with indication and installation of dental implants. Material and methods: Data on age and gender of the patients, indication and region of the implants, technique, type of connection and shape of the implants, bone density, need for grafting and image modality used for surgical planning were collected from dentistry records. Results: In total, 55 patients and 105 implants were evaluated. The age group ranged from 21 to 82 years, and women were the majority group (64%). Among the implant indications, 71% of the patients had only one tooth missing, and the lower first molars comprised most of the implants performed (21%). The conventional surgical technique was the most used (86%), as well as the cylindrical shape cone morse model. Conclusion: The proper selection of indications for implants seeks to be based on scientific evidence, and the protocols are essential to achieve high success rates.
Since the 1970, dental rehabilitation of partially or totally edentulous patients has been an increasingly used practice, due to improved materials and methods and high rates of survival and success. Objective: This study aimed to evaluate patients from the Faculty of Dentistry of the University of Passo Fundo, between 2015 and 2018, with indication and installation of dental implants. Material and methods: Data on age and gender of the patients, indication and region of the implants, technique, type of connection and shape of the implants, bone density, need for grafting and image modality used for surgical planning were collected from dentistry records. Results: In total, 55 patients and 105 implants were evaluated. The age group ranged from 21 to 82 years, and women were the majority group (64%). Among the implant indications, 71% of the patients had only one tooth missing, and the lower first molars comprised most of the implants performed (21%). The conventional surgical technique was the most used (86%), as well as the cylindrical shape cone morse model. Conclusion: The proper selection of indications for implants seeks to be based on scientific evidence, and the protocols are essential to achieve high success rates.
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