Effect of endodontic access type on the resistance to fracture of maxillary incisors.

Objective: To compare the effect of endodontic access cavity location--labial versus palatal--on the resistance to fracture of maxillary incisors.

Method And Materials: Sixty intact human maxillary incisors were selected: 20 pairs of central incisors and 10 pairs of lateral incisors. From each pair, 1 tooth was randomly selected to receive a palatal access cavity; the other tooth of the same pair received a labial access cavity.

Implant-retained feeding aid prosthesis for a patient following total glossectomy and laryngectomy: a clinical report.

This clinical report describes the prosthetic management of a patient following total glossectomy and total laryngectomy that severely compromised his oral function, caused facial disfigurement, and limited the patient's quality of life. A feeding aid prosthesis was designed to address the patient's chief complaint of difficulty in feeding and mastication. The prosthesis was designed as an implant-retained overdenture with a lingual metal plate to facilitate food introduction into the oropharynx.

Resistance to fracture of crowned endodontically treated premolars restored with ceramic and metal post systems.

Objectives: The objective of this study was to assess the resistance to fracture of crowned endodontically treated premolars with varying ceramic and metal post systems under simulated occlusal load.

Method And Materials: The study consisted of 60 extracted intact premolars with similar root diameter and length. Teeth were divided equally into 4 groups (n = 15) and prepared for posts and cast crowns as follows: group 1 = preformed metal post, composite core, and cast crown; group 2 = cast post and core and cast crown; group 3 = zirconia post, composite core, and cast crown; and group 4 = zirconia post and heat-pressed ceramic core and cast crown.

Survival of immediately loaded dental implants in deficient alveolar bone sites augmented with beta-tricalcium phosphate.

Purpose: Dental implant placement in atrophic alveolar ridges often necessitates grafting procedures, followed by immediate or delayed implant placement. This study assessed the survival of immediately loaded dental implants placed in deficient alveolar bone sites at bone grafting.

Materials: From 1999 to May 2002, 1 operator (A.

Strains recorded in a combined tooth-implant restoration: an in vivo study.

Implant-supported fixed prosthesis is a treatment option to restore missing teeth. Occasionally, it is necessary to connect teeth and implants as abutments for these restorations. Whether such restorations can be recommended is a matter of debate.

A preplanned surgical obturator prosthesis for alternative resection lines in the anterior region.

A technique is described that enables adaptation of a surgical obturator to accommodate anterior teeth that may or may not be resected with the lesion at surgery. This is designed and fabricated by placing additional clasps on the teeth in question and providing for a clasp on one of the anterior teeth that can be determined at the time of surgery, thereby allowing anterior retention of the obturator immediately postoperatively. This technique is cost-effective and useful, especially if no prosthodontist is available at the time of surgery to perform obturator modifications.

Rhinorrhea induced by loading of dental implants supporting an obturator prosthesis: a clinical report.

This clinical report describes an unusual situation of nasal discharge that was initially considered to be caused by a leaking obturator prosthesis in a partially repaired cleft palate patient. Ultimately, the diagnosis was rhinorrhea induced by the loading of dental implants that supported the obturator. The differential diagnoses of nasal irritation, blocking of nasal drainage posterior or anterior through a premaxillary defect, vasomotor rhinitis, and gustatory rhinorrhea are presented and discussed, as well as the measures taken to reach the final diagnosis.

Taurodontism: an endodontic challenge. Report of a case.

Taurodontism is a morphoanatomical change in the shape of a tooth, which usually occurs in multirooted teeth. An enlarged body and pulp chamber, as well as apical displacement of the pulpal floor, are characteristic features. Endodontic treatment of a taurodont tooth is challenging, because it requires special care in handling and identifying the number of root canals.

The effect of increasing occlusal vertical dimension on face height.

Purpose: This study evaluated the effect of increasing occlusal vertical dimension (OVD) on the face height in completely dentate young adults.

Materials And Methods: Faces of 22 subjects were photographed in a standardized manner in an anterior view. Sequential photographs were taken at intercuspation and clinical rest position, with four complete arch maxillary occlusal overlays increasing OVD in interincisal increments of 2, 4, 6, and 8 mm.