Abfraction or Theory of Abfraction is a theory explaining the non-carious cervical lesions (NCCL). It suggests that they are caused by flexural forces, usually from cyclic loading; the enamel, especially at the cementoenamel junction (CEJ), undergoes this pattern of destruction by separating the enamel rods. Clinical aspect importance of these ineart lesions are at most important to be detected...

The aim was to correlate alveolar bone loss in the buccal/palatal and the mesial/distal surfaces of upper molars in rats. Thirty-three, 60-day-old, male Wistar rats were divided in two groups, one treated with alcohol and the other not treated with alcohol. All rats received silk ligatures on the right upper second molars for 4 weeks. The rats were then euthanized and their maxillae were split ...

Aims: This in-vitro study was conducted to compare structural reinforcement with composite resin and two different types of posts in structurally compromised teeth. Methods Materials: Forty-eight human maxillary central incisors were instrumented obturated. Specimens randomly divided into four groups. The control group not just restored a composite. In the composite-reinforced group, access cav...

Background: The aim of this study was to perform a comparative evaluation 5% Sodium fluoride varnish, neutral nano silver (NSF) varnish and acidulated in remineralising artificially induced enamel caries primary teeth. Methods: 39 anterior teeth were sectioned 2mm below the cemento-enamel junction (CEJ) mounted acrylic resin blocks...

AIM The purpose of this study was to investigate the effect of polishing systems on the microleakage of a nanofill, a nanohybrid, and a microhybrid composite in Class V cavities. METHODS AND MATERIALS Preparations were made at the cemento-enamel junction (CEJ) of 36 extracted human premolars. The teeth were randomly divided into three groups and restored with new resin composites according to...

The aim of this study is to describe the morphology of the roots and root canals of permanent lower second premolars (LP4s) with fully developed roots of five hominin groups: Homo sp. (ATE9-1 specimen) from Atapuerca-Sima del Elefante locality, H. antecessor (ATD6-4 and ATD6-125) from Atapuerca-Gran Dolina TD6 locality, H. heidelbergensis from Atapuerca-Sima de los Huesos locality, H. neanderth...

PURPOSE In a prospective study, we assessed if a diagnosis of osteoporosis and periodontitis could predict hip and hand fractures in older persons. MATERIALS AND METHODS Bone density was assessed by a Densitometer. Periodontitis was defined by evidence of alveolar bone loss. RESULTS 788 Caucasians (52.4% women, overall mean age: 76 years, S.D.± 9.0, range: 62 to 96) were enrolled and 7.4% h...

UNLABELLED An 11-year-old female patient was referred with a chief complaint of pain in the right mandibular second premolar. Clinical and radiographic examinations showed secondary caries under an old composite restoration, a negative response to a pulp test and an immature root with an open apex. After root canal cleaning and shaping, bleeding was invoked in the canal up to 2 mm short of the ...

INTRODUCTION Vertical root fracture (VRF) is common in endodontically treated teeth. Conventional and digital radiographies have limitations for detection of VRFs. Cone-beam computed tomography (CBCT) offers greater detection accuracy of VRFs in comparison with conventional radiography. This study compared the effects of metal artifacts on detection of VRFs by using two CBCT systems. METHODS ...

BACKGROUND The objective of this study is to analyze a set of previously developed and proposed image segmentation protocols for precision in both intra- and inter-rater reliability for in vivo tooth volume measurements using cone-beam computed tomography (CBCT) images. METHODS Six 3D volume segmentation procedures were proposed and tested for intra- and inter-rater reliability to quantify ma...