Dr. Hani Aziz Ameen* Received on :17/8/2009 Accepted on:7/1/2010 Abstract Shaft misalignment is considered as one of the common repeated problems in most rotating machineries , which leads to generate vibrations and extra dynamic loads on transmitting gears teeth, also leads to nonuniformity in distribution of applied load along the meshing tooth face by being concentrated on one side of tooth ...

OBJECTIVE The reattachment of the crown fragment to a fractured tooth is a conservative treatment that should be considered for young patients with crown-root fractures to the maxillary incisors if the subgingival fracture can be exposed to provide isolation. Gingivectomy, the surgical or orthodontic extrusion of the apical fragment is necessary to expose the subgingival fracture. This report d...

OBJECTIVE This study compared the marginal gap, internal fit, fracture strength, and mode of fracture of CAD/CAM provisional crowns with that of direct provisional crowns. MATERIAL AND METHODS An upper right first premolar phantom tooth was prepared for full ceramic crown following tooth preparation guidelines. The materials tested were: VITA CAD-Temp®, Polyetheretherketone "PEEK", Telio CAD-...

Archaeological dog remains from many areas clearly show that these animals suffered tooth fractures, tooth loss, trauma, and dental defects during their lives. Relatively little research has explored the meanings of these patterns, particularly for ancient dog remains from small-scale societies of the North. One limiting issue is the lack of comparative data on dental health and experiences of ...

A total of 45 mandibular fracture patients with 54 teeth in the fracture line were evaluated retrospectively. One tooth in the fracture line was lost in the accident, 6 were extracted later and 47 could be saved (87%). At the follow-up examination 38% of the teeth were diagnosed to have pulp necrosis, which was found more frequently in the older patients and in cases in which the time elapsing ...

This report describes a case of an eight years old girl who was treated for complicated crown fracture of right maxillary central incisor because of a sport accident. For the tooth total pulpotomy was performed in order to achieve apexogenesis and the tooth was restored with a composite resin. The patient was reviewed over 10 years. At first the tooth showed continued root development and compl...

Endodontically treated teeth with inadequate tooth structure are highly susceptible to fracture and posts have been commonly used to restore such teeth.Custom cast posts and prefabricated posts have been commonly employed for a long time. It has been slowly replaced by the fibre posts which are more esthetic and also reduced the occurrence of root fracture which was common with the metallic posts.

UNLABELLED The fracture of an instrument is a recognized complication in endodontics. The immediate response to a fractured instrument is frequently to regard the treatment as a failure. Several factors must, however, be taken into account to evaluate the prognosis of the tooth in this situation. The objective of the endodontic treatment with or without a fractured instrument remains the same, ...

Surgical technique to accelerate the rate of orthodontic tooth movement has been recognized in many case reports. It is a clinically successful method used for mature patients, where time of orthodontic treatment may be important in preferred groups of patients. The alveolar bone remodeling and PDL are the significant factors in orthodontic tooth movement, and bone turnover is identified to enl...

statement of problem: the restoration of the teeth should have enough ability to withstand masticator forces while preserving as much tooth structure as possible. purpose: the purpose of this study was to compare the effects of light-heat cured composite with light cured composite restorations on fracture resistance of the restored teeth. materials and methods: forty healthy maxillary premolar ...