YETİŞKİN BİREYLERE AİT KONİK İŞINLI BİLGİSAYARLI TOMOGRAFİ GÖRÜNTÜLERİNDE PULPA/DİŞ ALAN ORANI ÖLÇÜMLERİ İLE BELİRLENEN YAŞ İLE KRONOLOJİK YAŞ ARASINDAKİ UYUMUN DEĞERLENDİRİLMESİ

Abstract

Age determination has attracted the attention of many scientists throughout history and studies have been carried out on this subject. When the studies are examined, It has been observed that the examination of secondary dentin deposition has become one of the frequently used parameters to determine age from the teeth of adult individuals. Recently, studies using CBCT images have increased and the results have been seem to be promising. In our study, the images of 236 individuals aged between 18-70 years who applied to the of Hacettepe University Faculty of Dentistry between 2019-2021 were analyzed retrospectively and CBCT images with high diagnostic quality in accordance with the determined criteria were included in the study. Maxillary central, lateral, canine and mandibular canine, 1. premolar, 2. premolar teeth were selected for the study. The pulp/tooth area ratio obtained from the cementoenamel junctional of the axial section of the CBCT images was evaluated. Intra-observer and inter-observer consistency were evaluated with intraclass correlation coefficient and the consistency was found to be strong. When the correlation between determined age and chronological age was evaluated by regression analysis, the relationship between pulp/tooth area ratios and age was not found to be sufficient for age determination. Four different machine learning algorithms were also used to evaluate the relationship of the obtained rates with age. These models were evaluated with two different approaches as models that try to determine age classes and models that try to determine the position of chronological age according to the threshold age. Models were found to be low in performance but they were considered as a different approach.