Biomedical subjects

A L Pissiotis

Publications and source records attributed to A L Pissiotis.

4 recordsLinked to original sources

PubMed1998

An esthetic and hygienic approach to the use of intracoronal attachments as interlocks in fixed prosthodontics.

This article describes a procedure that uses the Ney MS (Minimal Space) intracoronal attachment as an interlock in a pontic. This procedure overcomes the disadvantages associated with the use of the intracoronal attachments, which are (1) excessive tooth reduction often required to place the attachment within the contour of the crown; (2) compromised embrasures, which result in oral hygiene and periodontal problems; and (3) poor esthetics.

Denture Design↗

PubMed1998

Fabrication of a custom-made impression tray for making preliminary impressions of edentulous mandibles.

Severe mandibular alveolar ridge resorption is usually observed in patients with long-term edentulism and/or ill-fitting dentures. In some of these patients, the genial tubercles project into the floor of the mouth as a high point in the anterior area of the mandibular residual ridge. The lingual flanges of mandibular stock impression trays usually impinge on the most prominent areas of the resorbed mandibular edentulous ridge (i.e., internal oblique lines and genial tubercles). It is suggested that a preliminary custom tray be made in such cases to pour an initial impression so that individual custom trays can be fabricated. An efficient method for constructing such a custom impression tray from readily available materials is described.

Alveolar Bone Loss↗

PubMedDate not supplied

Cement failure loads of 4 provisional luting agents used for the cementation of implant-supported fixed partial dentures.

The major disadvantage of cement-retained implant-supported fixed partial dentures (FPDs) is difficulty in retrievability. The retentive strengths of the provisional luting agents usually employed in these cases are therefore an important consideration. This study evaluated the cement failure loads of 4 provisional luting agents used for the cementation of FPDs supported by 2 implants or 4 implants. Nogenol luting agent exhibited the lowest retentive values in both types of FPD. ImProv proved to be the most retentive cement of all tested. Temp Bond NE and Temp Bond presented significantly different values (P < .05) for the 2-implant FPD, but not for the 4-implant model. On the basis of the study results, it may be concluded that Nogenol appears to be more appropriate for cementation of both 2- and 4-implant-supported FPDs when removal of the provisionally cemented superstructure is anticipated.

Analysis of Variance↗

PubMedDate not supplied

Using cephalometry to evaluate maxillomandibular relationships in complete denture construction.

Long-term denture wearers undergo facial changes as a result of occlusal wear of the dentures and residual ridge resorption. This study examined 12 such patients, presenting with a clinical appearance of Angle's Class III occlusal relationships, to evaluate a clinical method of determining the correct mandibular position. Complete dentures were fabricated for each patient using standard clinical procedures, but acrylic resin blocks were left on the mandibular posterior bases instead of denture teeth. Ensuing changes in maxillomandibular relationships were recorded. After the stabilization of the mandibular relationship, the dentures were completed using mandibular posterior teeth. Patients were evaluated using cephalometric analysis before and after treatment. Results show that a careful procedure of denture fabrication allows the determination of the correct mandibular relationship, even in patients who have experienced extreme facial collapse.

Aged↗