THE PROSTHETIC VALUE OF THE TEETH ACCORDING TO THEIR PERIODONTAL ATTACHMENT LEVEL

• Main Authors: Nicoleta Ioanid, Gabriela Iften, Irina Grădinaru, Silvia Mârțu, Oana Țănculescu
• Format: Article
• Language: English
• Published: Romanian Society of Oral Rehabilitation 2016-07-01
• Series: Romanian Journal of Oral Rehabilitation
• Subjects: functional surface area; periodontal attachment; prosthetic value
• Online Access: http://www.rjor.ro/the-prosthetic-value-of-the-teeth-according-to-their-periodontal-attachment-level/?lang=ro
• ISSN: 2066-7000; 2066-7000

The aim of this study was to identify a correlation between decreasing on the effective periodontal surface and the level of the periodontal attachment. Materials and methods. The average values for total lateral root area were determined using software for measuring polygonal surfaces - UTHSC Image Tool 3.0. Also, it was necessary to determine the mean values for root length (using test t Student, ANOVA). These determinations were made on 140 extracted permanent teeth. Using simple regression from the tests General Linear Models (program Statistic 6.0) a linear function, y=b0 +b1x, was applied to establish a correlation between periodontal effective surface variation (y) and intraalveolar bone root length (x), for each tooth. Results Simulating the same level of periodontal attachment (e.g. 7 mm) has shown that, in case of monoradicular teeth, the periodontal functional surface resulted was greater as tooth root increased (e.g. 38,19% for the upper central incisor vs 50,54% for maxillary canine). In case of multi-rooted teeth, the periodontal functional areas were almost equal (e.g. 45.84% on upper M1 vs 44.36% on mandibular M1). Conclusions With a longer root, tooth implantation is better. Also, by comparison, multi-rooted teeth have a more pronounced decrease of periodontal ligament area for the same reduction of periodontal attachment level.