Objective: The objective of this study was to evaluate the microanalysis of various elements, and assess the surface characteristics of progressive periodontally diseased roots in comparison to sound root surface. Materials and Methods: 50 teeth were collected, 25 teeth from patients have progressive periodontitis, and 25 teeth from healthy patients. Measurements of probing depth and clinical a...

Age at first reproduction (AFR) has been difficult to quantify in mammals, as the most commonly used methods require reproductive tracts or direct observations. However, work in several large mammal species suggests that the width of cementum light bands in teeth decline once females begin to reproduce, suggesting that teeth structures might provide a new tool to examine AFR. To determine if ch...

STATEMENT OF THE PROBLEM One disadvantage of cement-retained crowns is the lack of predictable irretrievability. This problem can be overcome through designing a screw access hole in the metal substructure of cement-retained restoration and using porcelain stain to define this area. PURPOSE This study aimed to evaluate the influence of existence of screw access hole on porcelain fracture resi...

Marginal leakage was demonstrated in all the inlays at all time intervals with all cements by the use of the isotope Ca45. Gross marginal leakage was observed in all inlays luted with the cyanoacrylate cement at all time intervals. The setting time of this cement is very short, making it difficult to completely seat the inlay before the cement sets. The results of this study indicate that the c...

During the cementation of metallic restorations, the polymerization of dual-curing resin cements depends exclusively on chemical activation. This study evaluated the influence of chemical activation compared with dual-curing (chemical and light activation), on the hardness of four dual-curing resin cements. In a darkened environment, equal weight proportions of base and catalyst pastes of the c...

Although there are sufficient dentists in the world today, the majority of people do not have access to adequate, affordable, and acceptable oral health services. Discussions about the effectiveness of dental procedures and dental care in general are dominated by the concerns of dentists in industrialized countries. Are lasers useful in periodontal treatment? Which glass-ionomer cement should b...

Root fractures are defined as fractures involving dentine, cementum, and pulpal and supportive tissues. They comprise about 0.5–7% of all dental injuries. Horizontal root fractures are commonly observed in the maxillary anterior region and 75% of these fractures occur in the maxillary central incisors. Case report: This case report is about a 26-year-old male referred to the endodontic departme...

1 attachment, which is lost during disease. This type of regeneration is described by the term 'New attachment'. New attachment is the embedding of new periodontal ligament fibres on to new cementum previously denuded by the periodontal disease. Factors interfering with new attachment are plaque, calculus, infected cementum and alterations in mineral density and composition of root. These obsta...

PURPOSE There is insufficient data regarding the durability of porcelain laminate veneers bonded to existing composite fillings. The aim of the present study was to evaluate the fracture resistance and microleakage of porcelain laminate veneers bonded to teeth with existing composite fillings. MATERIALS AND METHODS Thirty maxillary central incisors were divided into three groups (for each gro...

A tooth fracture is a traumatic injury to with the disturbance of its crown or root part integrity. that involves cementum, dentin, periodontium and, in some cases, dental pulp. Root fractures occur 0.2-7% all cases permanent teeth injuries. The aim study was investigate clinical effectiveness using material based on hydroxyapatite «Bioplast-Dent» paste and mineral trioxide aggregate - «Rutsil»...