OBJECTIVE The purpose of the study was to use the photonic imaging modality of optical coherence tomography (OCT) to compare the marginal adaptation of composite inlays fabricated by direct and indirect techniques. MATERIAL AND METHODS Class II cavities were prepared on 34 extracted human molar teeth. The cavities were randomly divided into two groups according to the inlay fabrication techni...

Environmental adaptation, predisposition to common diseases, and, potentially, speciation may all be linked through the adaptive potential of mitochondrial DNA (mtDNA) alterations of bioenergetics. This Perspective synthesizes evidence that human mtDNA variants may be adaptive or deleterious depending on environmental context and proposes that the accrual of mtDNA variation could contribute to ...

in recent years, clinician and dentist’s esthetic demand in dentistry have increased rapidly, driven by an enhanced awareness of beauty and esthetics. the ultimate goal in modern restorative dentistry is to achieve “white” and “pink” esthetics in esthetically important zones. “white esthetics” is the natural dentition or the restoration of dental hard tissues with suitable materials. “pink esth...

We present a method to adapt statistical N-gram models for large vocabulary continuous speech recognition of highly inflected languages. The method combines morphological analysis, latent semantic analysis (LSA) and fast marginal adaptation for building topic-adapted trigram models, based on a background language model and very short adaptation texts. We compare words, lemmas and morphemes as b...

scope (DOM) was introduced to endodontics, offering significantly improved magnification and illumination. Bellizzi and Loushine advocated the benefits of optical magnification for posterior surgery.1 Carr stated that surgical and nonsurgical applications for the DOM have revolutionized the practice of endodontics.2 The advantage of the combined use of the DOM and visual guidance has been repor...

Adhesion is the procedure of forming an adhesive joint. The initial substrate is termed adherend and the material producing the interface is termed the adhesive [1]. The functions of dental adhesives is to promote conservation of tooth structure and enable minimally invasive dentistry, reinforcement of weakened dentin or enamel, reduce marginal staining, reduce microleakag and may also reduce p...

Department of Conservative Dentistry, Yonsei University School of Dentistry and Oral Science Research Center, Seoul, Korea Objectives: The internal adaptation of composite restorations with or without resin modified glass ionomer cement (RMGIC) was analyzed non-destructively using Microcomputed tomography (micro-CT). Materials and Methods: Thirty intact human teeth were used. The specimens were...

OBJECTIVES Computer-aided design (CAD) and manufacturing (CAM) allows the milling of high strength zirconia fixed partial dentures (FPD), however bonding to an inert ZrO(2) ceramic surface may effect the marginal integrity of the FPDs. The aim of this investigation was to evaluate the marginal adaptation of zirconia FPDs at the interfaces between zirconia, cement, and tooth. METHODS 32 3-unit...

BACKGROUND Marginal adaptation is very important in cast restorations. Maladaptation leads to plaque retention, reduction of mechanical and esthetic properties. The aim of this study was to evaluate the precision of three different impression materials (including: Additional silicone [AS] and condensational silicone [CS] and polyether [PE]) for duplicating master dies. MATERIALS AND METHODS T...

This study examined the effect of four margin designs on marginal adaptation of Captek crowns during selected processing steps. Twenty-four Captek crowns were fabricated, six each of four margin designs: shoulder (Group A), chamfer (Group B), chamfer with bevel (Group C), and shoulder with bevel (Group D). Marginal discrepancies between crowns and matching dies were measured at selected points ...