Diagnosing congenitally missing second premolars (SPs) in early childhood is challenging due to variations in their calcification ages. In this study, we investigated the correlation between calcification grades of SPs and other permanent posterior teeth to aid clinicians in the early diagnosis of congenitally missing SPs. This cohort study retrospectively evaluated 6813 images from 9261 panoramic image records of children aged 42-78 months.
View Article and Find Full Text PDFExtraction of permanent first molars (P1Ms) could create gaps, tipping and/or rotating of neighboring teeth, which depend on the extraction timing. This study evaluated the outcomes of P1Ms extraction in children who were classified based on their permanent second molar's (P2Ms) dental calcification at the time of extraction. In this retrospective study, the evaluations were made for 406 panoramic radiographs (PRs) of children aged 7-14 years who had single P1M extracted.
View Article and Find Full Text PDFJ Appl Biomater Funct Mater
April 2021
Objective: To evaluate the effects of three different curing units on the physical and mechanical features of three different orthodontic adhesive resin materials.
Material And Methods: 45 specimens (5 mm in diameter, and 2 mm in thickness) of each of the three different adhesive composite resin materials (Transbond XT, Grēngloo™ Adhesive and Light Bond Paste) were cured with three different light units (a polywave third generation (Valo), a monowave (DemiUltra), and a second-generation LED (Optima 10)). To quantify degree of conversion (DC), the Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy was used in transmission mode (ALPHA FT-IR Spectrometer, Bruker Optics, Germany).
Background: The Hall technique (HT) involves the placement of stainless steel crowns for treating asymptomatic carious primary teeth without tooth preparation or caries excavation.
Aim: To investigate whether temporomandibular dysfunction (TM-D) manifests in children after HT.
Design: Healthy children (age: 5-9 years) with dentin caries were treated with HT in a university clinic, and TM-D signs and symptoms were monitored in this cohort clinical trial.