Relationship of Anterior Alveolar Dimensions with Mandibular Divergence in Class I Malocclusion - A Cephalometric Study.

Introduction: One of the major limiting factors in retraction of proclined teeth is the width of the alveolus both in maxilla and mandible.

Aim: The objective of this study was to assess the maxillary and mandibular anterior alveolar dimensions and to correlate with mandibular divergence in Class I bi-dento-alveolar protrusion patients.

Materials And Methods: Pretreatment lateral cephalograms (n=88) were analysed using a composite analysis with cephalometric software.

Bisphenol A release from an orthodontic adhesive and its correlation with the degree of conversion on varying light-curing tip distances.

Introduction: The aims of this research were to use high-performance liquid chromatography to assess the bisphenol A (BPA) released from an orthodontic adhesive (Transbond XT; 3M Unitek, Monrovia, Calif) with various light-curing tip distances and to correlate the release to the degree of conversion.

Methods: One hundred thirty-eight premolar brackets were divided into 3 groups of 40 each for the high-performance liquid chromatography analysis and 3 groups of 6 each for assessing the degree of conversion. Fourier transform infrared spectroscopy was used for this purpose.