Erratum: Bone marrow mesenchymal stem cells enhance bone formation in orthodontically expanded maxillae in rats (The Angle Orthodontist (2015) 85:3 (394-399))

Ekizer, A. | Yalvac, M.E. | Uysal, T. | Sonmez, M.F. | Şahin, Fikrettin

Erratum | 2015 | Angle Orthodontist85 ( 5 )

[No abstract available]

Maxillary buccal cortical plate inclination at mini-screw insertion sites

Tozlu, M. | Cakan, D.G. | Ulkur, F. | Ozdemir, F.

Article | 2015 | Angle Orthodontist85 ( 5 ) , pp.868 - 873

Objective: To evaluate whether buccal cortical bone inclination varies for the maxillary alveolar processes of adult patients with decreased, normal, and increased facial heights. Materials and Methods: Cone-beam computed tomography images of 135 adult patients, including 49 hypodivergent subjects (26 women, 23 men), 40 hyperdivergent subjects (24 women, 16 men), and 46 normodivergent (25 women, 21 men) were analyzed. Cortical bone inclination measurements were made relative to the occlusal plane. Cross-sectional slices of the maxilla were taken at interdental sites from the distal aspect of maxillary canine to the mesial aspect of . . .maxillary second molar. Results: Analysis of variance indicated significant differences (P Daha fazlası Daha az

Skeletal, dental and soft-tissue changes induced by the Jasper Jumper appliance in late adolescence

Nalbantgil, D. | Arun, T. | Sayinsu, K. | Işik, F.

Article | 2005 | Angle Orthodontist75 ( 3 ) , pp.426 - 436

The purpose of this study was to evaluate the skeletal, dental, and soft-tissue changes in late-adolescent patients treated with Jasper Jumpers applied with sectional arches. The study sample consisted of 30 subjects (15 treated, 15 untreated) with skeletal and dental Class II malocclusion. Our study was carried out on 75 lateral cephalometric films. Among these radiograms, 15 were taken before the leveling stage in the treatment group. Half of the remaining 60 were taken before placement and after removal of the Jasper Jumper appliance in the treatment group and the other half at the beginning and six months after in the control gr . . .oup. The patient selection criteria were Class II malocclusion caused by retrognathic mandible, normal or low-angle growth pattern, and postpeak growth period. The statistical assessment of the data suggests that the sagittal growth potential of the maxilla was inhibited. There were no significant changes in the vertical skeletal parameters. The mandibular incisors were protruded and intruded, whereas the maxillary incisors were retruded and extruded. The upper molars tipped distally as the lower molars tipped mesially. Because of these changes, the occlusal plane rotated in the clockwise direction. Overbite and overjet were reduced, and the soft-tissue profile improved significantly. The results revealed that, in late-adolescent patients, the Jasper Jumper corrected Class II discrepancies mostly through dentoalveolar changes. It is suggested that this treatment method could be an alternative to orthognathic surgery in borderline Class II cases. © 2005 by The EH Angle Education and Research Foundation, Inc Daha fazlası Daha az

Metal ion release from silver soldering and laser welding caused by different types of mouthwash

Erdogan, A.T. | Nalbantgil, D. | Ulkur, F. | Şahin, Fikrettin

Article | 2015 | Angle Orthodontist85 ( 4 ) , pp.665 - 672

Objective: To compare metal ion release from samples welded with silver soldering and laser welding when immersed into mouthwashes with different ingredients. Materials and Methods: A total of 72 samples were prepared: 36 laser welded and 36 silver soldered. Four samples were chosen from each subgroup to study the morphologic changes on their surfaces via scanning electron microscopy (SEM). Each group was further divided into four groups where the samples were submerged into mouthwash containing sodium fluoride (NaF), mouthwash containing sodium fluoride + alcohol (NaF + alcohol), mouthwash containing chlorhexidine (CHX), or artific . . .ial saliva (AS) for 24 hours and removed thereafter. Subsequently, the metal ion release from the samples was measured with inductively coupled plasma mass spectrometry (ICP-MS). The metal ion release among the solutions and the welding methods were compared. The Kruskal-Wallis and analysis of variance (ANOVA) tests were used for the group comparisons, and post hoc Dunn multiple comparison test was utilized for the two group comparisons. Results: The level of metal ion release from samples of silver soldering was higher than from samples of laser welding. Furthermore, greater amounts of nickel, chrome, and iron were released from silver soldering. With regard to the mouthwash solutions, the lowest amounts of metal ions were released in CHX, and the highest amounts of metal ions were released in NaF + alcohol. SEM images were in accord with these findings. Conclusions: The laser welding should be preferred over silver soldering. CHX can be recommended for patients who have welded appliances for orthodontic reasons. © 2015 by The EH Angle Education and Research Foundation, Inc Daha fazlası Daha az

Vertical growth changes after adenoidectomy

Arun, T. | Isik, F. | Sayinsu, K.

Article | 2003 | Angle Orthodontist73 ( 2 ) , pp.146 - 150

The purpose of this retrospective investigation is to compare vertical growth component of craniofacial structure of subjects with early and late adenoidectomy history. The study consisted of 93 lateral cephalometric radiographs of three groups of randomly selected patients. The first group was made up of 12 patients (10 male and two female) with an average age of 11.16 ± 2.08 years, who had been operated upon between 1.5-4 years of age. The second group was made up of 54 patients (25 male and 29 female) with an average age of 12.18 ± 2.6 years, who had been operated upon after four years of age. The third group of 27 patients (7 ma . . .le and 20 female) with clear airway with an average age of 11.18 ± 2.35 years was used as the control. The data obtained from two adenoidectomy groups were compared and because no statistically significant difference was found except for ANSMe/NMe, the two groups were pooled and compared with the growth pattern in the control sample. There were statistically significant differences in the following parameters: SNGoMe, PPGoMe angle, Gonial angle, Gonial ratio, ? of inner angles, ANSMe/NMe ratio, Jarabak ratio, PNS-ad1 distance, PNS-ad2 distance, OAW1 distance. When compared with the control group, the adenoidectomy group showed a more vertically directed growth pattern, however, there were no vertical growth pattern differences between the two groups of children who had adenoidectomy before and after four years of age Daha fazlası Daha az

Periodontal status of ectopic canines after orthodontic treatment

Evren, A.D. | Nevzatoglu, S. | Arun, T. | Acar, A.

Article | 2014 | Angle Orthodontist84 ( 1 ) , pp.18 - 23

Objective: To evaluate the periodontal health and tooth vitality of palatally impacted and buccal ectopic maxillary canines after completion of orthodontic treatment. Materials and Methods: Fifteen patients who had unilateral, palatally impacted canines and 15 patients who had unilateral, buccal ectopic canines comprised the subjects of the study. Clinical and radiographic data was collected by recalling the patients in both groups after a mean period of 3.82 ± 1.54 years following completion of their orthodontic treatment. In both groups, the contralateral, normally placed canines served as controls. Results: Palatally impacted can . . .ines had greater pocket depths, higher gingival levels, higher electric pulp testing scores, and reduced bone levels compared to their contralaterals. Buccal ectopic canines had increased plaque and gingival bleeding index, greater pocket depths, reduced attached gingival width, higher gingival levels, increased clinical crown lengths, and higher electric pulp testing scores compared to their contralaterals. Buccal ectopic canines had lower electric pulp testing scores and higher bone levels compared to palatally impacted canines. Conclusion: All ectopic canines had increased plaque and gingival bleeding index, greater pocket depths, reduced attached gingival width, higher gingival levels, increased crown lengths, higher electric pulp testing scores, and reduced bone levels compared to their contralaterals. © 2014 by The EH Angle Education and Research Foundation, Inc Daha fazlası Daha az

Plant extract ankaferd blood stopper effect on bond strength

Trakyalia, G. | Oguz Oztopraka, M.

Article | 2010 | Angle Orthodontist80 ( 3 ) , pp.570 - 574

Objective: To determine the effect of Ankaferd Blood Stopper (ABS) on the shear bond strength (SBS) of orthodontic attachments. Materials and Methods: The study material consisted of 60 freshly extracted bovine permanent mandibular incisor teeth. All teeth were cleaned and randomly divided into three groups of 20 specimens and etched with 37% phosphoric acid for 15 seconds, washed, and air-dried. Teeth in groups 1 and 2 were contaminated with ABS and blood, respectively. Teeth in group 3 were only air-dried. Roth Generous maxillary central incisor brackets were bonded with Transbond XT to all teeth. SBS was applied using a universal . . . test machine. The one-way analysis of variance (ANOVA) test was used to determine significant differences in SBS between the three groups, and Tukey honestly significant post hoc test was used to compare subgroups. Results: The mean bond strengths and standard deviations of groups 1, 2, and 3 were 9.58 ±0.95, 4.04 6 0.69, and 19.56 ±1.84 MPa, respectively. Conclusions: Specimens contaminated with blood showed a statistically significant lower in vitro SBS than those contaminated with ABS. ABS may be used clinically for obtaining a blood-free tooth surface during application of the brackets on surgically exposed, impacted teeth. (Angle Orthod. 2010;80:570-574.) © 2010 by The EH Angle Education and Research Foundation, Inc Daha fazlası Daha az

Treatment of Condylar Hypoplasia with Distraction Osteogenesis: A Case Report

Arun, T. | Kayhan, F. | Kiziltan, M.

Article | 2002 | Angle Orthodontist72 ( 4 ) , pp.371 - 376

This report describes the surgical-orthodontic treatment procedures of a patient with condylar hypoplasia. Condylar hypoplasia is a major factor in any facial abnormality in a growing child. This case report describes a patient with a facial anomaly with an acquired unilateral condylar hypoplasia. His asymmetry was corrected by using functional therapy for the correction of muscle tonus and distraction osteogenesis for lengthening the mandibular ramal height. Fixed orthodontic appliances were used for conventional orthodontic therapy and final occlusal adjustment.

Noncompliance unilateral maxillary molar distalization: A three-dimensional tooth movement analysis

Mavropoulos, A. | Sayinsu, K. | Allaf, F. | Kiliaridis, S. | Papadopoulos, M.A. | Keles, A.O.

Article | 2006 | Angle Orthodontist76 ( 3 ) , pp.382 - 387

The aim of this prospective study was the three-dimensional (3-D) analysis of tooth movements after unilateral upper molar distalization by means of a noncompliance intraoral appliance, the Keles slider. This appliance exerts a distalizing force of 150 g at approximately the level of the center of resistance of the upper first molar. Twelve patients (six girls and six boys with a mean age of 13.1 years) with a unilateral Class II molar relationship participated in the study. Dental casts were taken immediately before placement and after removal of the appliance. The casts were digitized using a 3-D surface laser scanner and superimp . . .osed on a predefined area of the palate. The average unilateral upper first molar distal movement was 3.1 mm (range: 2.4 to 5.3 mm). Anchorage loss was expressed by a 2.1 mm (range: 0.8 to 3.8 mm) proclination of the central incisors and a 6.1° mesial inclination of the ipsilateral first premolar (range: 1.7° to 12.3°). There was approximately 1 mm of midline deviation toward the contralateral side and a 1.6 mm (range: 0.8 to 2.3 mm) buccal displacement of the contralateral first premolar. A substantial variation was observed among patients. Noncompliance unilateral upper molar distalization was an efficient treatment approach. There was, however, a substantial anchorage loss. Case selection is strongly recommended because significant anterior crowding, ectopic canines, or spacing can lead to significant anchorage loss. © 2006 by The EH Angle Education and Research Foundation, Inc Daha fazlası Daha az

Orthodontic treatment protocol of Ehlers-Danlos syndrome type VI

Arun, T. | Nalbantgil, D. | Sayinsu, K.

Article | 2006 | Angle Orthodontist76 ( 1 ) , pp.177 - 183

Ehlers-Danlos syndrome (EDS) type VI is an autosomal recessive disorder of the connective tissue characterized by joint hypermobility, muscle hypotonia, scoliosis, and ocular fragility. In this case report, an EDS type VI patient with a skeletal and dental Class III malocclusion is presented and the clinical approach to his orthodontic problem is emphasized. A 17-year-old male patient presenting some major and minor symptoms of the syndrome was referred to our orthodontic department for diagnosis and treatment. The typical clinical signs confirmed the diagnosis of EDS type VI. He was a skeletal and dental Class III malocclusion pati . . .ent (both mandibular protrusion and maxillary retrusion) with a noncontributory family history. He had severe crowding in the lower and upper dental arches with retruded incisors. His first treatment plan included orthognathic surgery, but because of the risks of bleeding and poor healing, we elected to treat the patient without surgery. © 2006 by The EH Angle Education and Research Foundation, Inc Daha fazlası Daha az

Nickel and Chromium Levels in the Saliva and Serum of Patients with Fixed Orthodontic Appliances

Agaoglu, G. | Arun, T. | Izgü, B. | Yarat, A.

Article | 2001 | Angle Orthodontist71 ( 5 ) , pp.375 - 379

The aim of this study was to evaluate the concentrations of nickel and chromium ions in salivary and serum samples from patients treated with fixed orthodontic appliances. A second aim of this study was to determine any significant changes in these concentrations during any period of the treatment time. Saliva and blood samples were collected from 100 patients ranging in age from 12 to 33 years. Twenty samples from each group were obtained. The groups were as follows: In the first group, saliva and blood samples were collected before insertion of the fixed appliances. In the second, third, fourth, and fifth groups, samples were coll . . .ected at 1 week, 1 month, 1 year, and 2 years after appliance insertion. The serum was prepared by centrifuging the blood samples at 3000 rpm for 10 minutes. The fixed appliances consisted of an average of 4 bands and 20 bonded brackets. No palatal or lingual appliances welded to bands or extraoral auxiliary appliances were used. The spectrophotometric determinations were carried out using electrothermal atomic absorption spectrophotometry. The results indicated certain differences in the amounts of nickel and chromium released from fixed orthodontic appliances during different periods of treatment. The Mann-Whitney U-test from the SPSS statistics program was used to analyze the significance of the differences between no-appliance samples and those obtained with the appliances present. In the serum, there were statistically significant increases in ion concentration in the second-year groups. In saliva samples, nickel and chromium reached their highest levels in the first month and decreased to their initial level in the rest of the groups. It can be concluded that fixed orthodontic appliances release measurable amount of nickel and chromium when placed in the mouth, but this increase doesn't reach toxic levels for nickel and chromium in the saliva and serum Daha fazlası Daha az

Bone marrow mesenchymal stem cells enhance bone formation in orthodontically expanded maxillae in rats

Ekizer, A. | Yalvac, M.E. | Uysal, T. | Sonmez, M.F. | Şahin, Fikrettin

Article | 2015 | Angle Orthodontist85 ( 3 ) , pp.394 - 399

Objective: To transplant bone marrow-derived mesenchymal stem cells (MSCs) into the interpremaxillary suture after rapid maxillary expansion with the aim of increasing new bone formation in the suture. Materials and Methods: Nineteen male Wistar rats were divided into two groups (control, n = 9; experimental, n = 10). Both groups were subjected to expansion for 5 days, and 50 cN of force was applied to the maxillary incisors with a helical spring. Pkh67+ (green fluorescent dye)-labeled MSCs were applied to the interpremaxillary suture after force application into the interpremaxillary suture of rats. Bone formation in the sutural ar . . .ea was histomorphometrically evaluated, including the amount of new bone formation (µm2), number of osteoblasts, number of osteoclasts, and number of vessels. Mann-Whitney U-test was used for statistical evaluation at the P < .05 level. Results: After 10 days of retention, Pkh67+ can be detected in suture mostly in the injection site under fluorescence microscope. Histomorphometric analysis revealed that a single local injection of MSCs into the midpalatal suture increased the new bone formation in the suture by increasing the number of osteoblasts and new vessel formation, compared with controls injected with phosphate-buffered saline. Conclusions: This preclinical study might provide foundations for the underlying potential clinical use of MSCs after maxillary expansion. Given the fact that MSCs are currently in use in clinical trials, this approach might be a feasible treatment strategy to accelerate new bone tissue formation in midpalatal suture and to shorten the treatment period for patients undergoing maxillary expansion reinforcement © 2015 by The EH Angle Education and Research Foundation, Inc Daha fazlası Daha az

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