Effectiveness of Er:YAG laser in cavity preparation for retrograde filling--in vitro study.

The purpose of this study was to determine the sealing quality of Super EBA cement in laser prepared root-end cavities in comparison with root-end cavities classically prepared with steel burrs. Two groups of three millimeter root sections were prepared. The first group was prepared with the Er:YAG laser and the second group with a steel burr mounted on a surgical handpiece.

Proteomics profiling of keratocystic odontogenic tumours reveals AIDA as novel biomarker candidate.

Background: Keratocystic odontogenic tumour (KCOT) is a benign, yet aggressive odontogenic tumour. Herein, proteome analysis of KCOT lesions in comparison with control patient-matched tissue unaffected by the disease and with inflammatory odontogenic cysts, namely radicular cysts is presented.

Methods: For the proteomics profiling, two complementary proteomics techniques MALDI-MS/MS and LC-ESI-MS/MS were employed.

Modified Millard's technique in operations for unilateral cleft lip.

Many approaches have been described, but the rotation-advancement technique described by Millard remains one of the most popular repair techniques for correction of cleft lip. The technique described here is a modified method that can be used in primary cleft surgery but also for secondary correction, using the same incision with a small modification in design. Thirty-two patients were followed up for two years, all of whom had good postoperative results without secondary correction.

Maxillary fragment stabilization after Le Fort I fracture with 1 screw pair per plate.

Purpose: The aim of the present study was to determine whether plates with only 1 screw pair can be used for Le Fort I fracture management. Good postoperative results motivated the direct application of mandible fixation principles to the fractured midface region without additional experimental research. However, the amount and distribution of the forces in the midface region is different from those on the mandible.

Protective intramedullary fixation after harvest of an osteocutaneous radial free flap.

The osteocutaneous radial free flap, even after 30 years, is still considered to be the "workhorse" for head and neck reconstruction. A high incidence of donor site fractures has remained a major problem, however. The technique described here is a method developed for the prophylaxis of fractures of the donor site of the harvested radial bone and is based on a modification of the intramedullary Rush nail fixation.

In vitro study of the variable square pulse Er:YAG laser cutting efficacy for apicectomy.

Background And Objectives: Variable square pulse (VSP) Er:YAG laser should be quicker than older Er:YAG lasers. The objectives were: (1) comparison of VSP laser and mechanical handpiece efficacy for apicectomy and (2) determination of optimal pulse width/energy/frequency combination.

Study Design/materials And Methods: Sixty extracted, single-rooted mature human teeth with round apical parts were instrumented, root filled, cleaned, and divided into four groups.