Assessment of the reliability of radiographic signs on panoramic radiographs to determine the relationship between mandibular third molars and the inferior alveolar canal.

Objective: To assess the reliability of radiographic signs of the relationship between impacted mandibular third molars (IMTMs) and the inferior alveolar canal (IAC), and the vertical relationship between IMTM and IAC on panoramic radiographs (PRs) as risk indicators for IAC exposure during extraction.

Study Design: Seven radiographic signs regarding the appearance of roots and the IAC were assessed as present or absent on PRs. The vertical relationship between IMTM and the IAC was divided into 3 levels.

Maxillary sinus aspergilloma of odontogenic origin: Report of 2 cases with cone-beam computed tomographic findings and review of the literature.

Aspergilloma of the maxillary sinus is considered rare in immunocompetent patients, but a considerable increase has recently been seen in the incidence of reported cases. Dental procedures involving the antral region are thought to predispose individuals to this form of aspergillosis. Because aspergilloma shares similar clinical features with other sinus pathologies, its diagnosis may be delayed.

Benign cementoblastoma of the anterior mandible: an unusual case report.

A benign cementoblastoma, which is another name for a true cementoma, is a rare neoplasm that develops from odontogenic ectomesenchyme. It is characterized by a mineralized mass attached to the apex of the root produced by neoplastic cementoblasts. More than 75% of cases arise in the mandible, with 90% of them manifesting in the molar and premolar regions.

Assessment of heat generation during implant insertion.

Statement Of Problem: Many studies have investigated the heat generated during implant preparation, but data are needed to better predict heat generation during implant insertion.

Purpose: The purpose of this study was to measure the heat generated during insertion of an implant at speeds of 30, 50, and 100 rpm, and with manual insertion.

Material And Methods: Sixty-four uniform fresh bovine femoral cortical bone specimens were used.

Alveolar ridge expansion-assisted orthodontic space closure in the mandibular posterior region.

Orthodontic closure of old, edentulous spaces in the mandibular posterior region is a major challenge. In this report, we describe a method of orthodontic closure of edentulous spaces in the mandibular posterior region accelerated by piezoelectric decortication and alveolar ridge expansion. Combined piezosurgical and orthodontic treatments were used to close 14- and 15-mm-wide spaces in the mandibular left and right posterior areas, respectively, of a female patient, aged 18 years and 9 months, diagnosed with skeletal Class III malocclusion, hypodontia, and polydiastemas.

Temperature variation on root surface with three root-end cavity preparation techniques.

Introduction: Thermal changes can occur on the external root surface when root-end cavity preparation is performed, which may damage periodontal ligament cells and alveolar bone.

Objective: The purpose of this study was to evaluate the temperature changes during preparation of the root-end cavities at 1 and 3 mm to the sectioned apical root surfaces when either tungsten carbide round bur, diamond round bur or ultrasonic diamond tip was used.

Methods: Root-end resection was performed at 90 degrees to the long axis of the root, 3 mm from the apex.

Advancement of the premaxilla with distraction osteogenesis.

Objectives: The aim of this study was to evaluate the effects of premaxillary advancement with distraction osteogenesis (DO) on the skeletal, dental, and soft tissues.

Materials And Methods: A total of 21 cases with Angle class I molar relationship and negative overjet or edge-to-edge incisor relationship were included. Due to patient relocation during fixed orthodontic treatment the results of 19 patients (9 females, 10 males) were reported.

Autogenous cortical bone and bioactive glass grafting for treatment of intraosseous periodontal defects.

Objective: The aim of this 6-month prospective randomized clinical study was to compare the effectiveness of autogenous cortical bone (ACB) and bioactive glass (BG) grafting for the regenerative treatment of intraosseous periodontal defects.

Methods: Via a split-mouth design, 15 chronic periodontitis patients (7 men, 8 women; mean age, 43.47 ± 1.

Ultrasonography in the evaluation of midpalatal suture in surgically assisted rapid maxillary expansion.

Surgically assisted rapid maxillary expansion (SARME), which combines orthodontics and surgery, is a well-established therapy for transverse maxillary hypoplasia in adults after sutural closure or completion of skeletal maturation. X-rays are usually the preferred monitoring technique for this treatment. Recently, ultrasound scanning has been used successfully in the follow-up of patients undergoing distraction osteogenesis.

Temperature variation during apicectomy with Er:YAG laser.

Objective: The purpose of this in vitro study was to evaluate the generated temperature of the Er:YAG laser, with three different pulse durations for apicectomy, compared with tungsten bur and surgical saw.

Background Data: Apicectomy is an endodontic surgery performed to remove the root apex and curette adjacent periapical tissue because of lesions of the apical area that are not healing properly.

Methods: Sixty single-rooted extracted human teeth were resected by three cutting methods: tungsten bur, surgical saw, and Er:YAG laser irradiation with three different pulse durations; pulse duration 50 μs, pulse duration 100 μs, and pulse duration 300 μs.

Keratocystic odontogenic tumor: case report with CT and ultrasonography findings.

Keratocystic odontogenic tumor (KCOT) is a benign odontogenic tumor with a potentially aggressive and infiltrative behavior. KCOT is most commonly occurred in mandible and demonstrate a unilocular, round, oval, scalloped radiolucent area, while large lesions may appear multilocular. An important characteristic of KCOT is its propensity to grow in an antero-posterior direction within medullary cavity of bone causing minimal expansion.

Resonance frequency analysis of 208 Straumann dental implants during the healing period.

The most important prerequisite for the success of an osseointegrated dental implant is achievement and maintenance of implant stability. The aim of the study was to measure the 208 Straumann dental implant stability quotient (ISQ) values during the osseointegration period and determine the factors that affect implant stability. A total of 164 of the implants inserted were standard surface, and 44 of them were SLActive surface.

Comparison of heat generation during implant drilling using stainless steel and ceramic drills.

Purpose: The purpose of this study was to compare the heat generated from implant drilling using stainless steel and ceramic drills.

Materials And Methods: A total of 40 fresh bovine femoral cortical bone samples were used in this study. A constant drill load of 2.

Effect of autogenous cortical bone grafting in conjunction with guided tissue regeneration in the treatment of intraosseous periodontal defects.

Objectives: The aim of this clinical trial was to evaluate the additional benefit of using guided tissue regeneration (GTR) with autogenous cortical bone (ACB) grafting versus ACB grafting alone for the regenerative treatment of intraosseous periodontal defects.

Methods: Via a split-mouth design, 12 patients with chronic periodontitis (five men, seven women; mean age, 45.3±4.

Nasolabial cyst: case report with CT and MRI findings.

Nasolabial cysts are uncommon primarily unilateral soft tissue lesions located adjacent to the alveolar process above the apices of the maxillary incisors. Clinical features of the nasolabial cysts are smooth fluctuant soft tissue swelling between the upper lip and nasal aperture with obliteration of the nasolabial fold and elevation of the nasal ala. A nasolabial cyst is described including its features on CT and MRI exams.

Effect of surgical drill guide on heat generated from implant drilling.

Purpose: The purpose of this study was to evaluate the heat generated in bone by 2 implant drill systems in vitro with and without using surgical drill guides.

Materials And Methods: Temperature was measured with K type thermocouple in vitro using the bovine femoral cortical bone model. A constant drill load of 2.

Influence of different suturing techniques on periodontal health of the adjacent second molars after extraction of impacted mandibular third molars.

Objective: The objective of this randomized controlled trial was to compare the effects of different suturing techniques (simple loop suture vs. anchor suture) on the periodontal health of the adjacent second molars after impacted mandibular third molar extraction.

Study Design: Fifteen patients with bilaterally identical impacted mandibular third molars were used.

Advancement of mandibular symphysis with distraction osteogenesis.

This case report demonstrates the effects of mandibular symphysis advancement with distraction osteogenesis (DO) in a 21-year-old man with a Class I molar relationship, protrusive maxillary incisors, crowding in both arches, and increased overjet and overbite. Treatment consisted of maxillary arch leveling, mandibular incisor repositioning through mandibular symphysis advancement with DO, and subsequent mandibular arch leveling. The osteotomy line, between the canine and the first premolar, was extended from the interdental area to the lower border of the mandibular symphysis bilaterally.

Efficacy of dental practitioners in injection techniques: computerized device and traditional syringe.

Objective: To compare the effect of clinicians on the behavioral pain reaction of children who received local anesthesia with a conventional technique and a computerized device (Wand, Milestone Scientific).

Method And Materials: One hundred four children aged 6 to 12 years who needed operative dentistry using infiltrative anesthesia in the mandible and maxilla were selected for this study. The patients were divided into 2 groups, each assigned to a different clinician, and received anesthesia either by the Wand or conventional technique.

A comparison of injection pain with articaine with adrenaline, prilocaine with phenylpressin and lidocaine with adrenaline.

Objective: The objective of the present study was to investigate the pain on injection of articaine with adrenaline, prilocaine with phenylpressin , and lidocaine with adrenaline.

Study Design: The study sample was comprised of 497 consecutively seen patients received 497 maxillary buccal infiltration injections or inferior alveolar block injections of 4% articaine with 1:200.000 adrenaline, 3% prilocaine with 1.

Cytokine and chemokine levels in radicular and residual cyst fluids.

Background: Cytokines were thought to play an important role for the expansion of odontogenic cysts. The purpose of this study was to evaluate the cytokine and chemokine levels of radicular and residual cyst fluids.

Methods: Cyst fluids were aspirated from 21 patients (11 radicular and 10 residual cysts) and the levels of interleukin-1 alpha (IL-1alpha), tumor necrosis factor-alpha (TNF-alpha), monocyte chemotactic protein-1 (MCP-1), and regulated upon activation normal T cell expressed and secreted (RANTES) were determined by ELISA using commercially available kits.

Comparison of 2 flap designs in the periodontal healing of second molars after fully impacted mandibular third molar extractions.

Purpose: This investigation compared the effects of different flap designs on the periodontal health status of the mandibular second molar after the extraction of the adjacent impacted third molar.

Patients And Methods: Eighteen patients aged 16 to 32 years who required removal of bilateral impacted mandibular third molars were included in this study. The periodontal health of the second molar was evaluated preoperatively and at 1 week, 2 weeks, 4 weeks, and 12 months postoperatively.

Inferior alveolar nerve paresthesia caused by a dentigerous cyst associated with three teeth.

The dentigerous cyst is a common pathologic entity associated with an impacted tooth, usually third molars. They generally are asymptomatic, being found on routine dental radiographic examination. This report describes the case of a 43 year old male with a large dentigerous cyst associated with mandibular canine, first and second premolar teeth that caused paresthesia of the inferior alveolar nerve.

Panoramic radiographic examination of edentulous mouths.

Objective: Panoramic radiographs often are the first method used to screen edentulous patients before complete denture therapy. However, routine radiographic examination of edentulous patients is being questioned because of the cumulative effects and cost of radiation exposure. The purpose of this study was to determine the frequency and location of significant radiographic findings in edentulous jaws.

The response of subcutaneous connective tissue to a new endodontic filling material.

The purpose of this histopathologic study was to assess and compare the subcutaneous connective tissue reaction to a new root canal filling material, Resilon and gutta-percha. The test materials were directly inserted subcutaneously into the dorsal connective tissue of Wistar albino rats. Histopathological examinations were done at 7, 15, 30, and 60 days after the implantation procedure.