Crack formation on resected root surfaces subjected to conventional, ultrasonic, and laser root-end cavity preparation.

Objective: The aim of this study was to evaluate cracks on root ends following resection and cavity preparation with a laser and two established techniques.

Background Data: If root canal treatment of a tooth fails, an apicoectomy operation may be indicated. Three millimeters of the root tip is resected and a cavity of similar depth with parallel walls is cut to receive a root-end filling.

Accuracy of the Dentaport ZX apex locator for working length determination when retreating molar root canals.

The aim of this study was to evaluate the accuracy of the Dentaport ZX apex locator for working length determination during root canal retreatment of mandibular molars. Fifteen extracted mandibular first molars with separate mesial canals and apical foraminae and one distal canal were selected. The mesiobuccal and distal canals were investigated; the length with the file tip at the major diameter was defined as the tooth length (TL).

Salivary and serum B-cell activating factor (BAFF) levels after hydroxychloroquine treatment in primary Sjögren's syndrome.

Purpose: Some evidence implicates a role of hydroxychloroquine (HQ) in the management of Sjögren's syndrome. This study evaluated the effect of HQ on saliva B-cell activating factor (BAFF) levels as well as health related quality of life (QoL) in patients with primary Sjögren's syndrome (pSS).

Materials And Methods: Ten pSS patients who had been treated with HQ for at least 2 years and 15 healthy controls (HC) were included in the study.

Evaluation of two different root-end cavity preparation techniques: A scanning electron microscope study.

Objective: In this study, we aimed to evaluate and compare the dentinal walls of root-end cavities for the presence of cracks after cavity preparation using US retrotips and Er: YAG laser.

Materials And Methods: Fifty single-rooted teeth were prepared by Protaper NiTi rotary system and obturated by lateral condensation. Three milimeters of root-end was resected.

Salivary levels of HNP 1-3 are related to oral ulcer activity in Behçet's disease.

Background: Saliva contains antimicrobial peptides derived from oral epithelium as well as neutrophils in the innate immune response. The aim of this study was to examine the association between salivary human neutrophil peptide (HNP) 1-3 levels originating from neutrophils and oral ulcers in patients with Behçet's disease (BD).

Methods: Ninety-five patients with BD (F/M: 39/56; mean age: 38.

Salivary levels of antimicrobial peptides Hnp 1-3, Ll-37 and S100 in Behcet's disease.

Background: Oral ulcer is the cardinal clinical sign and increased neutrophilic activity is a part of the pathogenesis in Behcet's disease (BD). Saliva, as a part of the innate immune response, contains antimicrobial peptides (AMPs) that are derived from both oral epithelial cells and neutrophils. The aim of this study was to investigate the associations between salivary levels of AMPs HNP 1-3, LL-37 and S100 and disease course in patients with Behcet's disease (BD).

Tensile bond strength of indirect composites luted with three new self-adhesive resin cements to dentin.

Objective: The aims of this study were to evaluate the tensile bond strengths between indirect composites and dentin of 3 recently developed self-adhesive resin cements and to determine mode of failure by SEM.

Material And Methods: Exposed dentin surfaces of 70 mandibular third molars were used. Teeth were randomly divided into 7 groups: Group 1 (control group): direct composite resin restoration (Alert) with etch-and-rinse adhesive system (Bond 1 primer/adhesive), Group 2: indirect composite restoration (Estenia) luted with a resin cement (Cement-It) combined with the same etch-and-rinse adhesive, Group 3: direct composite resin restoration with self-etch adhesive system (Nano-Bond), Group 4: indirect composite restoration luted with the resin cement combined with the same self-etch adhesive, Groups 5-7: indirect composite restoration luted with self-adhesive resin cements (RelyX Unicem, Maxcem, and Embrace WetBond, respectively) onto the non-pretreated dentin surfaces.

Sealing efficiency of BeeFill 2in1 and System B/Obtura II versus single-cone and cold lateral compaction techniques.

Objective: The objective of this study was to investigate the sealing properties of 2 warm vertical compaction techniques (BeeFill 2in1, System B/Obtura II) in comparison with single-cone and cold laterally compacted gutta-percha.

Study Design: The root canals of single-rooted human teeth were prepared by using Mtwo rotary files and divided into 4 groups (n = 10/group) with respect to the filling technique tested: Group 1, cold laterally compacted gutta-percha + AH-26; Group 2, single-cone tapered Mtwo gutta-percha + AH-26; Group 3, System B/ObturaII + AH-26; Group 4, BeeFill 2in1 + 2seal. The leakage of specimens was measured using a fluid-filtration method after 1 and 2 weeks.

Factors affecting oral health habits among children with cerebral palsy: pilot study.

Background: The aim of the present study was to investigate the factors affecting the oral health habits of children with spastic-type cerebral palsy (CP).

Methods: A total of 35 children with CP and their mothers were randomly selected for this cross-sectional study. Data regarding their sociodemographic characteristics and their oral health habits were collected during face-to-face interviews.

The correlation between root canal patterns and interorificial distance in mandibular first molars.

Objectives: The aim of this study was to investigate the relationship of the distance between mesiobuccal (MB) and mesiolingual (ML) orifices (interorificial distances) in the pulp chamber floor and the degree of canal curvature in the mandibular first molars.

Study Design: In this in vitro study, 102 extracted teeth were radiographed in both buccolingual (CV) and mesiodistal (PV) directions and then grouped according to the Vertucci classification. The interorificial distance was measured by the stereomicroscope method.

Endodontic treatment of unusual central incisors.

This report presents an endodontic therapy in an unusual case of a patient who had wide crowns of both permanent maxillary central incisors. The right maxillary central incisor had two separate canals on a fused root and the left had a large root canal within one root.