Evaluation of Stress Distribution and Force in External Hexagonal Implant: A 3-D Finite Element Analysis.

Purpose: To analyze the stress distribution and the direction of force in external hexagonal implant with crown in three different angulations.

Materials And Methods: A total of 60 samples of geometric models were used to analyze von Mises stress and direction of force with 0-, 5-, and 10-degree lingual tilt. Von Mises stress and force distribution were evaluated at nodes of hard bone, and finite element analysis was performed using ANSYS 12.

Evaluation of Serum C-reactive Protein Levels in Subjects with Aggressive and Chronic Periodontitis in Comparison with Healthy Controls: A Clinico-biochemical Study.

Aim: Evaluation and comparison of serum C-reactive protein (CRP) levels in subjects with chronic and aggressive periodontitis.

Materials And Methods: Based on the periodontal status, 45 subjects were selected and divided into three groups. Group I - subjects with clinically healthy periodontium, Group II - generalized aggressive periodontitis (GAP), and Group III - chronic periodontitis (CP).

Treatment of ectopic mandibular second permanent molar with elastic separators.

Ectopic eruption is a developmental disturbance in which the tooth fails to follow its normal eruption pathway. Ectopic eruption of the second molar is relatively rare. This paper presents the case of thirteen-year-old male with an ectopic mandibular second permanent molar.

Comparative Evaluation of Marginal Adaptation of Biodentine(TM) and Other Commonly Used Root End Filling Materials-An Invitro Study.

Aim: The purpose of this investigation was to evaluate the marginal adaptation of three root-end filling materials Glass ionomer cement, Mineral trioxide aggregate and Biodentine(TM).

Methodology: Thirty human single-rooted teeth were resected 3 mm from the apex. Root-end cavities were then prepared using an ultrasonic tip and filled with one of the following materials Glass ionomer cement (GIC), Mineral trioxide aggregate (MTA) and a bioactive cement Biodentine(TM).

Xeroderma pigmentosum: man deprived of his right to light.

Xeroderma pigmentosum (XP) is a hereditary autosomal recessive disorder characterized by photo hypersensitivity of sun exposed tissues and subsequent several-fold increased risk for malignant changes resulting from impaired ability to repair UV-induced DNA damage. Estimated incidences vary from 1 in 20,000 in Japan to 1 in 250,000 in the USA, and approximately 2.3 per million live births in Western Europe.

Overexpression of MDM2 protein in ameloblastomas as compared to adenomatoid odontogenic tumor.

Background: Recent studies on odontogenic tumors have identified various molecular alterations responsible for their development, and determination of epithelial proliferation is a useful means of investigating the differences in biologic behavior of these tumors. One such specific marker to identify proliferative activity and tumor aggressiveness by immunohistochemistry (IHC) is MDM2, 90-95 kDa protein.

Objective: This immunohistochemical study using MDM2 expression was undertaken to understand better the diverse biological activity of two groups of odontogenic tumors namely ameloblastoma and adenomatoid odontogenic tumor (AOT) based on their cell proliferation activity.

Early treatment of class III malocclusion with Petit facemask therapy.

Class III malocclusion with retrusive maxilla can be orthopedically corrected in the deciduous or mixed dentition, with reverse pull headgear in combination with or without rapid maxillary expansion. The advantage of expansion in these patients is to correct the posterior cross bite, and disarticulate the maxilla. This is a case report of successful treatment of developing skeletal class III malocclusion using Petit facemask without maxillary expansion.

Comparison of shear bond strength of orthodontic brackets bonded with light emitting diode (LED).

Light-emitting diode (LED) light curing units (LCU) have recently been used to polymerize resin-based orthodontic adhesives and preliminary studies indicate their use has been successful. The objectives of this study were to evaluate the shear bond strength (SBS) oforthodontic brackets bonded to enamel with a LED LCU (LEDMAX 4, Hilux, Kulzer comp.) at 10, 20 and 40 seconds and comparing them with that of 40 seconds light exposure from a conventional halogen-based LCU (Hilux unit, Heraeus Kulzer comp.

Management of severe anterior open-bite in an adult patient using miniscrews as skeletal anchorage.

Anterior open bite is often caused by a downward rotation of the mandible and/or by excessive eruption of the posterior teeth. In such cases, it is difficult to establish absolute anchorage for molar intrusion by traditional orthodontic mechanics. This is a case report of successful treatment of a severe anterior open bite using miniscrew anchorage.