Priva thodo Bern, Senio cine a Kingd Ortho Facul Asso Schoo Profe Abstract [Please consult CONSORT for abstracts] Introduction: The objective of this “2-arm parallel” trial was to compare the survival rates of mandibular lingual retainers bonded with either chemically cured or light-cured adhesive after orthodontic treatment.Methods: Patients having undergone orthodontic treatment at a private ...

fabricated and prefabricated. In the late 19th century, the “Richmond crown,” a single-piece post-retained crown with a porcelain facing, was engineered to function as a bridge retainer. Richmond crown is not post and core system but it is customized, cast able post and crown system as both are single unit and casted together. It is easier to make cast metal restorations with the aid of posts f...

OBJECTIVES To investigate the influence of cavity preparation (MO/DO/MOD) and type of matrix system on proximal contact tightness of direct posterior composite restorations. MATERIALS AND METHODS 85 patients in need of a two- or three surface Class II direct composite restoration were randomly divided into two treatment groups. Group 1 was treated with a sectional matrix system combined with ...

The prime implicate trie (pi-trie) of a logical formula is a tree whose branches are labeled with the prime implicates of the formula. The technology of reduced implicate tries is employed to analyze the structure of pi-tries. Appropriate lemmas and theorems are proved, and an algorithm that builds the pi-trie from a logical formula is developed. Preliminary experimental results are presented.

Patients who present self-injurious behavior (SIB) can be considered a treatment challenge in the dental office or hospital setting. Oral structures can play various roles in the process of self injury. In this paper, the authors report a case of SIB in the form of cheek-biting on an adolescent with a history of hydrocephalus and developmental delay, which was successfully treated with a modifi...

Four different orthodontic applications of a polyethylene fiber material are shown and discussed in case reports. Ribbond (Ribbond Inc, Seattle, Wash), a bondable, reinforced polyethylene fiber material, was successfully used in a fixed orthodontic retainer, a space maintainer, a temporary postorthodontic fixation device to attach a pontic to abutment teeth during periodontal therapy, and a pos...

Implant-supported dental prostheses can be retained by a screw or cement. Implant-supported fixed partial dentures have a passive fit. A passive fit means there is an internal gap between the abutment surface and the intaglio of the retainer to insure that there is no lateral pressure on the supporting implants or friction upon seating of the prosthesis. This gap is filled with cement for reten...