Effect of dowel length on the retention of 2 different prefabricated posts.

Objective: To compare in vitro the retentive values of stainless steel, parallel-sided posts to quartz-fiber, tapered posts for 2 different dowel lengths (5 and 10 mm).

Method And Materials: Both post systems were cemented with a dual-cure adhesive resin cement. Single-rooted extracted human teeth (n = 40) were decoronated and randomly divided into 4 groups of 10 samples each.

Impact of a biological barrier in pulpectomies of primary molars.

Purpose: The purpose of this in vitro study was to determine whether placement of a resorbable collagen barrier at the apical one third of the root canal could prevent extrusion of pulpectomy filling material.

Methods: Twenty-five extracted primary mandibular second molars, with at least two thirds of root length remaining, were used. The apical third of each root was covered with utility wax, and teeth were embedded in acrylic.

Interdisciplinary approach to endodontic therapy for uncooperative children in a dental school environment.

The aim of this study was to describe an interdisciplinary approach for endodontic therapy of behavior-challenging children and to report the efficacy of sedation techniques for these procedures. Sedation records of thirty-two patients who received root canal treatment were reviewed. Age at treatment in months, gender, year of treatment, tooth type, status of root maturation (open or closed apex), etiological factor(s), sedation protocol, and outcome were the variables analyzed.

Endodontic treatment of a Patient with Huntington's disease.

Huntington's disease is a lethal autosomal dominant disorder that affects men and women equally. The prevalence of Huntington's disease in North America is 5 to 10 per 100000 people. It is characterized by regular personality changes, dementia, and choreiform (dance-like) movements.

Personal video monitor as an accessory to dental operating microscopes.

Objective: The aim of this study was to perform a qualitative assessment of the personal video monitor (PVM) as an accessory to the dental operating microscope (DOM).

Method And Materials: The PVM was attached to a color video monitor, which was already attached to a DOM through a beam splitter. One faculty clinician performed a complete oral examination on a patient wearing a binocular inclinable lens adapted to the DOM under different magnifications, while a second faculty watched the procedure simultaneously using a PVM.

Periradicular radiographic assessment in diabetic and control individuals.

Objective: The purpose of this study was to investigate the prevalence of radiographic periradicular radiolucencies in endodontically treated and untreated teeth in patients with and without diabetes.

Study Design: The records of 30 subjects with diabetes and 23 control subjects attending the Endodontic Graduate Clinic at the University of Florida, Gainesville, were reviewed. The number of teeth with root canal treatments with and without periradicular radiolucencies and the number of teeth without endodontic treatment but with periradicular lesions were recorded.

Coronal microleakage assessed by polymicrobial markers.

Studies have shown significant bacterial leakage following exposure of sealed root canals to artificial and natural saliva. The objective of this study was to determine contamination via bacterial migration in artificial saliva in endodontically treated teeth using different obturation techniques and sealers. A total of 144 extracted, human mandibular anterior teeth were cleaned and shaped to a #40 master apical file using hand and rotary instrumentation.

Cyclosporin-induced gingival overgrowth in a child treated with CO2 laser surgery: a case report.

A case of a 10 year-old boy with gingival overgrowth due to cyclosporin therapy after heart transplantation is described. Different treatment approaches are discussed and the surgical effect of CO2 laser is illustrated. The critical role of routine professional cleaning and good oral health maintenance for the healthy status of the gingival tissue is also emphasized in this paper.

Comparison of the apical seal obtained by a dual-cure resin based cement or an epoxy resin sealer with or without the use of an acidic primer.

This study compared the apical leakage of roots obturated with gutta-percha using either a dual-cure resin based cement (Panavia F) or an epoxy-resin sealer (Thermaseal plus) with or without the application of an acidic primer (ED Primer). Eighty-six single rooted canine teeth were decoronated, cleaned, and shaped by using hand and rotary instruments, randomly divided into four groups, and obturated as follows: group A (n = 20): ED Primer applied followed by thermoplastized obturation with gutta-percha and Thermaseal Plus sealer; group B (n = 20): thermoplastized obturation with gutta-percha and Thermaseal Plus; group C (n = 20): ED primer applied followed by thermoplastized obturation with gutta-percha and Panavia F; group D (n = 20): thermoplastized obturation with gutta-percha and Panavia F. Both a negative control (n = 3; entire root coated with wax) and a positive control (n = 3; obturated with only a fitted master cone) were included in the study.