Flexibility of Bayesian generalized linear mixed models for oral health research.

Many outcome variables in oral research are characterized by positive values and heavy skewness in the right tail. Examples are provided by many distributions of dental variables such as DMF (decayed, missing, filled teeth) scores, oral health impact profile score, gingival index scores, and microbiologic counts. Moreover, heterogeneity in data arises when more than one tooth is studied for each patient, due to the clusterization.

Immediate loading of maxillary fixed prostheses retained by zygomatic and conventional implants: 24-month preliminary data for a series of clinical case reports.

Purpose: To evaluate the success rate of immediately loaded conventional implants placed in the premaxilla in association with 2 zygomatic implants.

Materials And Methods: All patients included had worn complete maxillary dentures for at least 2 years. They were required to have no severe systemic pathologies and could not be on any drugs.

A new coping for overdentures. Part 2: Preliminary results of a clinical study.

The aim of this study was to evaluate a new type of coping used for overdentures. Twenty-nine patients received 60 new chairside copings prepared by 3 operators. The copings, used to anchor removable prostheses, were followed up for between 6 months and 4 years with inspection, probing, and radiographic evaluation.

A new coping for overdentures. Part 1: A pilot study of the marginal precision.

The aim of this study was to investigate the marginal precision of new chairside copings prepared on 20 extracted teeth. The marginal fit was examined microscopically through 360-degree external observations. Subsequently, 10 new copings were adapted in vivo on 10 teeth that were planned for extraction.

Dimensional contour stability of acrylic resin bases for complete dentures before and after water sorption.

Purpose: To evaluate the dimensional contour variations of acrylic resin denture bases before and after storage in water.

Materials And Methods: The fit of 40 bases was evaluated by measuring the thickness of a layer made with silicone placed between the bases and the casts. The measurements were repeated on a new set of silicone layers after having stored the bases in water for 42 days.

Marginal adaptation of fixed prosthodontics: a new in vitro 360-degree external examination procedure.

Purpose: This study evaluated the marginal fit of experimental and custom-made fixed prosthetic restorations through a new 360-degree external examination. The minimum number of gap measurements required to produce relevant results for gap analysis was also investigated.

Materials And Methods: The marginal fit of six experimental and eight custom-made crowns was observed microscopically by means of a mechanical device, and software was employed to measure the gap.