Orhan, K. | Orhan, A.I. | Oz, U. | Namdar Pekiner, F. | Delilbasi, C.

Article | 2007 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology104 ( 4 )

The jawbones can be sites of various neoplastic conditions. Given the variety of processes affecting this particular anatomical area, formulation of a precise diagnosis can be challenging to clinicians. Limited jaw movement, pain, and facial asymmetry are common signs among patients, especially those with temporomandibular disorder (TMD). This paper reports a case of primary fibrosarcoma affecting the mandible and surrounding structures in a 14-year-old girl presenting signs and symptoms similar to TMD. Her condition was misdiagnosed, and she was treated for TMD over an extended period before the correct diagnosis was made for fibro . . .sarcoma. The patient underwent surgical resection with postsurgical radiotherapy and chemotherapy and now is being followed up. Although malignant lesions are rare in the temporomandibular joint (TMJ) region, dentists are advised to be aware of the condition and to keep in mind that patients who are admitting for TMD can also possibly be affected from neoplasms. Hence, those patients have to be examined meticulously to avoid misdiagnosis and mistreatment. © 2007 Mosby, Inc. All rights reserved Daha fazlası Daha az

Kayahan, M.B. | Malkondu, Ö. | Canpolat, C. | Kaptan, F. | Bayirli, G. | Kazazoglu, E.

Article | 2008 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology105 ( 1 )

Objective: The purpose of this study was to evaluate the relationship between the quality of root canal fillings and type of permanent coronal restorations and their association with the periapical status in a Turkish subpopulation. Study design: There were 1268 endodontically treated teeth from 280 panoramic radiographs that were evaluated. Two observers assessed the radiographs using an x-ray viewer with 2 times magnification. Teeth were classified according to the type of restorations. The quality of root canal fillings were evaluated according to the criteria determined by Tronstad et al. Apical status was assessed by the Periap . . .ical Index scores (PAI) proposed by Ørstavik et al. Chi-square test was used for statistical analysis. Results: There were 59.5% of endodontically treated teeth that showed healthy periapex. Teeth with good endodontic treatment showed statistically significant high healthy periapex rates regardless of the type of the restoration. In addition, the evaluation of the entire material also showed that the roots with posts had significantly more periapical pathosis than roots without posts (P = .001). Conclusions: It can be concluded that, although the quality of the root canal filling plays a key role in the outcome of endodontic therapy, the type of restoration can also be a contributing factor in the treatment outcome. © 2008 Mosby, Inc. All rights reserved Daha fazlası Daha az

Dilek, O.C. | Tezulas, E. | Dincel, M.

Article | 2007 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology103 ( 3 )

Following a partial maxillectomy in a patient, the oral and nasal cavities remain open, providing a passageway for transmission of air and fluids between the 2 cavities. In such cases the primary aim should be the construction of an implant-supported obturator prosthesis with adequate retention, stability, and peripheral seal. In this case report, a 34-year-old female patient who underwent a class II (according to Okay et al.) partial maxillectomy 14 years before was fitted with an obturator that was supported by 5 mini dental implants. The reason for the preference of mini dental implants is the lack of adequate bone tissue for con . . .ventional implant placement in the resected area and the placement of mini dental implants with a simple surgical procedure. The treatment achieved restoration of the lost functions, which satisfied the patient, restoring her self-confidence and enhancing her quality of life. Thus, applying obturators supported by mini dental implants was successful and may be considered as an alternative to more complicated surgical techniques. Although the presented case is promising, further clinical research is needed to draw more definite conclusions. © 2007 Mosby, Inc. All rights reserved Daha fazlası Daha az

Karagenç, B. | Gençoglu, N. | Ersoy, M. | Cansever, G. | Külekçi, G.

Article | 2006 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology102 ( 1 ) , pp.110 - 113

Objective: The purpose of this study was to compare four different microleakage tests (dye leakage, electrochemical test, bacterial test and fluid filtration) for evaluation of the coronal seal of teeth obturated using Thermafil or lateral condensation techniques. Study design: One hundred forty-four extracted single-rooted teeth were selected and prepared. The specimens were divided into 8 experimental groups. In 4 groups the root canals were filled with Thermafil obturators and in the other 4 groups by the lateral condensation technique. Coronal microleakage was assessed after exposing one group of specimens (n = 15 teeth) from ea . . .ch of the obturation techniques to each of the four microleakage tests. Results: In the fluid filtration test, lateral condensation showed statistically less leakage than the Thermafil technique (P < .05). Electrochemical and dye leakage test results showed no difference between the two obturation techniques (P < .05). However, in the bacterial leakage test, Thermafil showed less leakage than lateral condensation (P < .05). Conclusion: There is poor correlation between various methods to evaluate hydraulic leakage. The clinical significance of leakage tests in vitro is questionable. © 2006 Mosby, Inc. All rights reserved Daha fazlası Daha az

Güler, N. | Çildir, S. | Iseri, U. | Sandalli, N. | Dilek, O.

Article | 2005 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology99 ( 5 ) , pp.110 - 113

Bilateral migration of teeth into the coronoid process in a patient with ectodermal dysplasia has not been reported in the literature except one report in which severe hypodontia and bilaterally ectopic impacted teeth in the coronoid processes of a nonsyndromic patient occurred. This article presents a 15-year-old female with hypohidrotic ectodermal dysplasia who had surgical removal of bilaterally impacted teeth in the coronoid process and was rehabilitated with a dental implant-retained fixed prosthesis in the mandible and over-denture in the maxilla. © 2005 Elsevier Inc. All rights reserved.

Tezulas, E. | Dilek, O.C.

Review | 2008 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology106 ( 5 ) , pp.679 - 684

Autogenous bone particles can be obtained with bone collectors during implant osteotomy; however, collected bone particles contain oral microorganisms that may cause infectious complications. The purpose of this review was to summarize the clinical studies that have evaluated the degree of this contamination and the effectiveness of different decontamination methods. Stringent aspiration protocol, preoperative oral chlorhexidine rinse, and antibiotic prophylaxis are important precautions to be implemented when collected bone particles are to be implanted. Despite reducing contamination of collected bone particles, none of the method . . .s described in the literature can completely decontaminate collected bone particles or prevent the risk of infectious complications. Further research is needed to identify more effective decontamination methods. © 2008 Mosby, Inc. All rights reserved Daha fazlası Daha az

Tagtekin, D.A. | Ozyoney, G. | Baseren, M. | Ando, M. | Hayran, O. | Alpar, R. | Stookey, G.K.

Article | 2008 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology106 ( 5 ) , pp.729 - 735

Objective: The objective of this study was to evaluate the repeatability of 2 nondestructive caries detection methods, ultrasound (ULS) and DIAGNOdent, for the detection of approximal caries lesions, and to evaluate 2 tips provided for the DIAGNOdent. Study design: White/brown-spot lesions (n = 42) were captured by a digital camera, and measured by test methods and confocal laser scanning microscope (CLSM). Intra- and inter-observer reliability, accuracy, and Cohen's kappa and Spearman's rho statistics were used. Results: At DIAGNOdent, intra-observer agreements were 78.5%, 66.7% for A tip and 59.5%, 47.6% for B for 2 examiners, res . . .pectively. Accuracy of both tips was 50% for the first examiner; 45.3% for A and 47.6% for the B tip for the second examiner. All ULS measurements were accurate, reliable, and positively and significantly correlated between examiners. Conclusion: The A tip of the DIAGNOdent was found to be better than the B tip for the detection of enamel caries. All DIAGNOdent and ULS measurements were positive and significantly correlated for both examiners. Both methods demonstrated high repeatability and accuracy. © 2008 Mosby, Inc. All rights reserved Daha fazlası Daha az

Kaptan, F. | Sert, S. | Kayahan, B. | Haznedaroglu, F. | Tanalp, J. | Bayirli, G.

Article | 2005 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology100 ( 5 ) , pp.636 - 642

Objectives. To comparatively evaluate the shaping efficacies of HERO Shaper rotary instruments and Nitiflex hand files. Study design. The mesial roots of 40 mandibular molars were used. In 20 teeth, the mesiobuccal canals were instrumented with HERO Shaper and the mesiolingual canals with Nitiflex. In the remaining 20 teeth, the mesiobuccal canals were instrumented with Nitiflex and the mesiolingual canals with HERO Shaper. Pre- and postoperative sections were obtained from the coronal, middle, and apical portions and analyzed. Statistical analysis was performed using the Student t test. Results. More dentin was removed from the mid . . .dle portion with HERO Shaper (P < .05). No statistically significant difference was observed in terms of transportation (P > .05). No instrument fracture or deformation was noted. Conclusions. Both HERO Shaper and Nitiflex can be recommended for clinical practice. Further studies can focus on the comparison of HERO Shaper with other rotary instruments as there is an increasing trend for the utilization of these systems. © 2005 Elsevier Inc. All rights reserved Daha fazlası Daha az

Orhan, K. | Delilbasi, C. | Cebeci, I. | Paksoy, C.

Article | 2005 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology99 ( 3 ) , pp.349 - 354

Objectives. Pneumatized articular eminence or tubercule (PAT) is an air cell cavity in the zygomatic process of the temporal bone that is similar to air cells in the mastoid process and ethmoid bone. The purpose of this study was to determine the prevalence and variations of PAT among an outpatient dental clinic population at Ankara University, Turkey, to make a contribution to the few current studies about PAT. Study design. A total of 1006 panoramic radiographs were retrospectively investigated for the prevalence and radiographic features of PAT. Meta-analysis was done for 4 large case series in the literature and our case series. . . . Furthermore, we performed Chi-square test to evaluate age, gender, localization, and prevalence differences among 5 case series including ours. Results. PAT was found in 19 (1.88%) patients with a mean age of 36.6 (SD 21.06) years. Twelve cases (63.1%) occurred in females and 7 cases (36.9%) occurred in males. Bilateral PAT was found in 7 patients (36.9%). Meta-analysis of 5 large case series revealed a total of 6669 patients, of whom 115 had PAT (1.76% prevalence) occurring over an age range of 7 to 90 years. Fifty (43.47%) occurred in males and 65 (56.53%) occurred in females. Bilateral PAT was found in 28 (24.34%) patients. The result of Chi-square test showed no statistically significant differences among the 5 studies with respect to age, gender, localization, and prevalence. Conclusions. Knowledge about these structures is helpful for the interpretation of imaging such as panoramic radiographs and provides valuable information to understand the spread and differential diagnosis of pathological entities in this region. Moreover, clinicians who are planning to perform temporomandibular joint surgery are advised to assess radiographic imaging thoroughly before the surgery to avoid intra-operative complications and reconstruction Daha fazlası Daha az

Imirzalioglu, P. | Uçkan, S. | Güler, N. | Haberal, A. | Uçkan, D.

Article | 2009 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology108 ( 5 ) , pp.693 - 698

Objective: Our hypothesis is that increased apoptosis in synovium might contribute to temporomandibular joint (TMJ) degeneration. To investigate this, we measured soluble Fas (sFas) and nuclear matrix protein (NMP) levels in TMJ synovial fluid from patients with disc displacement without reduction as indicators of apoptosis in the synovium. Patients and methods: Synovial fluid was obtained from 17 joints in 17 patients (11 female, 6 male; mean age, 31.5 ± 11.9 years; range, 19 to 55). Patients were referred to our clinic because of limited mouth opening, joint sounds, or TMJ pain. Synovial fluid obtained by arthrocentesis for therap . . .eutic reasons was analyzed by enzyme-linked immunosorbent assays for APO-1/Fas and cell death detection (NMP). Results: We studied 12 left (71%) and 5 right (29%) joints with disc displacement without reduction. The chief complaint was pain on the affected side and limited mouth opening. Only 2 patients had a click in the affected joint, whereas 14 reported pain and 17 had the limited mouth opening. All patients experienced a significant (P < .01) increase in maximal mouth opening immediately after arthrocentesis. Mean sFas and NMP levels were 484.9 ± 466.7 pg/mL (range, 17 to 1501) and 29.2 ± 13.7 U/mL (range, 8 to 52.8) respectively. Conclusion: Considering reports that increased sFas blocks apoptosis by inhibiting binding of FasL to Fas on the cell membrane, low level of sFas in our patients' synovial fluid (compared with amounts reported in joint inflammation or degeneration) suggests vulnerability to apoptosis in patients with internal derangement. © 2009 Mosby, Inc. All rights reserved Daha fazlası Daha az

Dilek, O. | Tezulas, E. | Dincel, M.

Article | 2008 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology105 ( 2 ) , pp.693 - 698

Immediate loading of implants decreases the period a patient has to remain edentulous. However, for successful immediate loading in clinical practice, a strong initial fixation with bone is a prerequisite. In the present study, it is aimed to measure the primary stability, minimum placement, and removal torque values of mini dental i{dotless}mplants which were originally designed for immediate loading. Therefore, mini dental i{dotless}mplants (10, 13, 15, and 18 mm length and 1.8 and 2.4 mm diameter) were inserted into nonviable femoral bovine bone with a physiodispenser which can show the torque values digitally. After the implants . . . were inserted, the primary stability values were measured with Periotest. Then the implants were removed from the bone using the same physiodispenser and the removal torque values of the implants were measured. Finally, 3 related tables were created, which show the match of the 3 different values (primary stability, placement, and removal torque) for each implant. The best Periotest values are -8 to +9, which reveal the best primary fixation range. In the tables, placement and removal torque values that correspond to this range are observed. In conclusion, it is believed that the results will aid the dentists in their decision for the selection of the Periotest value ranges and their related placement and removal torque values to decide for immediate loading of the mini dental i{dotless}mplants. Mini dental i{dotless}mplants, which are especially designed for immediate loading, can only be loaded immediately if their Periotest values (and their related placement and removal torque values) are measured to be between the range of -8 to +9. It is believed that the placement and removal torque values below the -8 to +9 Periotest range are not suitable for immediate loading procedure. Because this study concentrates only on experimental results, further clinical research is needed to be made in order to draw more definite conclusions about immediate loading of the mini dental implants. © 2008 Mosby, Inc. All rights reserved Daha fazlası Daha az

Deniz, E. | Guc, U. | Buyukbabani, N. | Gul, A.

Article | 2010 | Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology110 ( 2 ) , pp.196 - 200

Objective: The aim was to investigate heat shock protein 60 (HSP60) expression in oral ulcerations of Behet's disease (BD). Study design: Biopsy specimens were obtained from patients with BD (n = 11), recurrent aphthous stomatitis (RAS) (n = 11), oral lichen planus (OLP) (n = 11) and healthy individuals (HI) (n = 11). Eight samples in BD and RAS groups were evaluable. All groups were analyzed by biotin streptavidin-aminoethylcarbazole using monoclonal mouse antibodies to HSP60 Ab-1 (clone LK1). Results: Immunostaining indicative of HSP60 expression in BD and RAS were significantly higher than HI. No significant difference was found . . .between BD and OLP except in the suprabasal layer of epithelium. Conclusions: Altered expression of HSP60 was found in ulcerative lesions of BD and RAS suggesting that HSP60 has an association with the etiology or chronicity of these inflammatory lesions. © 2010 Mosby, Inc Daha fazlası Daha az