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Öğe Alveolar bone changes after asymmetric rapid maxillary expansion(E H ANGLE EDUCATION RESEARCH FOUNDATION, INC, 2015) Akin, Mehmet; Baka, Zeliha Muge; Ileri, Zehra; Basciftci, Faruk AyhanObjective: To quantitatively evaluate the effects of asymmetric rapid maxillary expansion (ARME) on cortical bone thickness and buccal alveolar bone height (BABH), and to determine the formation of dehiscence and fenestration in the alveolar bone surrounding the posterior teeth, using cone-beam computed tomography (CBCT). Materials and Methods: The CBCT records of 23 patients with true unilateral posterior skeletal crossbite (10 boys, 14.06 +/- 1.08 years old, and 13 girls, 13.64 +/- 1.32 years old) who had undergone ARME were selected from our clinic archives. The bonded acrylic ARME appliance, including an occlusal stopper, was used on all patients. CBCT records had been taken before ARME (T1) and after the 3-month retention period (T2). Axial slices of the CBCT images at 3 vertical levels were used to evaluate the buccal and palatal aspects of the canines, first and second premolars, and first molars. Paired samples and independent sample t-tests were used for statistical comparison. Results: The results suggest that buccal cortical bone thickness of the affected side was significantly more affected by the expansion than was the unaffected side (P < .05). ARME significantly reduced the BABH of the canines (P < .01) and the first and second premolars (P < .05) on the affected side. ARME also increased the incidence of dehiscence and fenestration on the affected side. Conclusions: ARME may quantitatively decrease buccal cortical bone thickness and height on the affected side.Öğe Can demineralized enamel surfaces be bonded safely?(TAYLOR & FRANCIS LTD, 2014) Akin, Mehmet; Baka, Zeliha Muge; Ileri, Zehra; Basciftci, Faruk AyhanObjective. To evaluate and compare the effects of enamel demineralization, microabrasion therapy and casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) application on the shear bond strength (SBS) of orthodontic brackets bonded to enamel surfaces and enamel color. Materials and methods. Eighty freshly extracted human maxillary premolar teeth were allocated to one of the four groups. Brackets were bonded directly to non-demineralized enamel surfaces in Group I (control group), directly to the demineralized enamel surfaces in Group II, to demineralized enamel surfaces after CPP-ACP application in Group III and to demineralized enamel surfaces after microabrasion therapy in Group IV. The samples were stored in water for 24 h at 37 degrees C and then underwent thermocycling. The SBS in megapascals (MPa) was determined by a shear test with 0.5 mm/min crosshead speed and failure types were classified with modified adhesive remnant index scores. The data were analyzed with one-way analyses of variance (ANOVA), Tukey and chi-square tests at the alpha = 0.05 level. Results. Significant differences were found among the four groups (F = 21.57, p < 0.01). No significant difference was found between Group I and III (17.12 +/- 2.84 and 15.08 +/- 3.42 MPa, respectively) or between Group III and IV (12.82 +/- 2.64 MPa). The lowest SBS value was determined in Group II (5.88 +/- 2.12 MPa). Enamel demineralization, microabrasion therapy and CPP-ACP application affected enamel color significantly. Conclusion. CPP-ACP application and microabrasion therapy are able to increase the decreased SBS of orthodontic brackets because of enamel demineralization.Öğe Cone-beam computed tomography evaluation of dentoskeletal changes after asymmetric rapid maxillary expansion(MOSBY-ELSEVIER, 2015) Baka, Zeliha Muge; Akin, Mehmet; Ucar, Faruk Izzet; Ileri, ZehraIntroduction: The aims of this study were to quantitatively evaluate the changes in arch widths and buccolingual inclinations of the posterior teeth after asymmetric rapid maxillary expansion (ARME) and to compare the measurements between the crossbite and the noncrossbite sides with cone-beam computed tomography (CBCT). Methods: From our clinic archives, we selected the CBCT records of 30 patients with unilateral skeletal crossbite (13 boys, 14.2 +/- 1.3 years old; 17 girls, 13.8 +/- 1.3 years old) who underwent ARME treatment. A modified acrylic bonded rapid maxillary expansion appliance including an occlusal locking mechanism was used in all patients. CBCT records had been taken before ARME treatment and after a 3-month retention period. Fourteen angular and 80 linear measurements were taken for the maxilla and the mandible. Frontally clipped CBCT images were used for the evaluation. Paired sample and independent sample t tests were used for statistical comparisons. Results: Comparisons of the before-treatment and after-retention measurements showed that the arch widths and buccolingual inclinations of the posterior teeth increased significantly on the crossbite side of the maxilla and on the noncrossbite side of the mandible (P < 0.05). Comparison of the 2 sides showed statistically significant differences in both the maxilla and the mandible (P < 0.05). Conclusions: After ARME treatment, the crossbite side of the maxilla and the noncrossbite side of the mandible were more affected than were the opposite sides.Öğe Effect of menstrual cycle on orthodontic pain perception A controlled clinical trial(URBAN & VOGEL, 2016) Ileri, Zehra; Baka, Zeliha Muge; Akin, Mehmet; Apiliogullari, Seza; Basciftci, Faruk AyhanThe aim of this prospective, single-center, controlled clinical trial was to evaluate the effects of menstrual cycle phases on orthodontic pain perception. A total of 48 women between 16 and 20 years old with regular menstrual periods who were scheduled to undergo extraction of two upper first premolars for orthodontic treatment were enrolled in this study. Laceback ligatures were used to move canines distally. After activating the laceback ligatures, each patient completed a questionnaire in order to assess pain and quality of life. Pain perception was recorded by patients on a visual analogue scale (VAS) and a verbal rating scale-4 (VRS) immediately after activation (T1) and 24 h after activation (T2). During the appointment, each patient's menstrual-cycle phase (follicular or luteal) was determined by asking some questions about her cycle. For statistical analysis of data, the Mann-Whitney U, independent t test, and Wilcoxon tests were applied. Mean orthodontic pain score was 1.96 +/- 0.80 and 47.08 +/- 21.68 in the follicular phase, 1.92 +/- 0.82 and 46.25 +/- 18.92 in the luteal phase at T1 using the VRS and VAS, respectively. Orthodontic pain scores were worse in those patients in the luteal phase than those in the follicular phase (p < 0.05) in terms of both VRS (p = 0.025) and VAS (p = 0.046). No significant difference between pain scores at T1 and those at T2 in both luteal and follicular phases (p > 0.05) were observed. The menstrual phase has an influence on the perception of orthodontic pain which is higher in the luteal phase following the activation of laceback ligatures. In clinical practice, the phases of the menstrual cycle may have a significant role in how women perceive orthodontic pain.Öğe Effects of 2 bracket and ligation types on plaque retention: A quantitative microbiologic analysis with real-time polymerase chain reaction(MOSBY-ELSEVIER, 2013) Baka, Zeliha Muge; Basciftci, Faruk Ayhan; Arslan, UgurIntroduction: The aim of this study was to evaluate the effects of self-ligating brackets and conventional brackets ligated with stainless steel ligatures on dental plaque retention and microbial flora. Methods: Twenty boys (mean age, 14.2 +/- 1.5 years) underwent bonding with self-ligating bracket systems and conventional standard edgewise bracket systems ligated with stainless steel ligatures with a split-mouth design. Clinical measurements, including plaque index, probing pocket depth, and bleeding on probing, were obtained before bonding, 1 week after bonding, and 3 months after bonding. Supragingival plaque samples were obtained at baseline and 3 months after bonding for the detection of bacteria. A quantitative analysis for Streptococcus mutans, Streptococcus sobrinus, Lactobacillus casei, and Lactobacillus acidophilus was performed using real-time polymerase chain reaction. The Mann-Whitney U test and the Hotelling T-2 multivariate test were used for statistical comparisons of the groups. Results: The numbers of S mutans, S sobrinus, L casei, and L acidophilus were not statistically different between self-ligating brackets and conventional brackets ligated with stainless steel ligatures (P>0.05). The 2 archwire ligation techniques showed no statistically significant differences in plaque index, bleeding on probing, and probing pocket depth values of the bonded teeth (P>0.05). All clinical parameters and the numbers of all microorganisms showed statistically significant increases from baseline to 3 months after bonding in both groups (P<0.001). Conclusions: Self-ligating brackets and conventional brackets ligated with stainless steel ligatures do not differ with regard to dental plaque retention.Öğe Effects of different pre-treatment methods on the shear bond strength of orthodontic brackets to demineralized enamel(TAYLOR & FRANCIS LTD, 2016) Veli, Ilknur; Akin, Mehmet; Baka, Zeliha Muge; Uysal, TancanObjective. To compare the effects of different treatment methods used for the enamel damage, on the shear bond strength (SBS) and fracture mode of orthodontic brackets. Materials and methods. Freshly-extracted 140 premolars were randomly allocated to seven groups: Group I was considered as the control of other groups. The remaining groups were exposed to demineralization. In group II, brackets were directly bonded to the demineralized enamel surface. CPP-ACP paste (GC Tooth Mousse), fluoride varnish (Bifluorid 12), microabrasion with a mixture prepared with 18% hydrochloric acid and fine pumice powder, microabrasion with an agent (Opalustre) and resin infiltrant (Icon (R)) were applied in Groups III, IV, V, VI and VII, respectively. The specimens were tested for SBS and bond failures were scored according to the Adhesive Remnant Index (ARI). Analysis of variance and Tukey tests were used to compare the SBS of the groups. ARI scores were compared with G-test. The statistical significance was set at p < 0.05 level. Results. Statistically significant differences were found among seven groups (F = 191.697; p < 0.001). The SBSs of groups I (mean = 18.8 +/- 2.0 MPa) and VII (mean = 19.1 +/- 1.4 MPa) were significantly higher than the other groups. No statistically significant difference was found between groups IV (mean = 11.5 +/- 1.2 MPa) and V (mean = 12.6 perpendicular to 1.5 MPa). The differences in ARI scores of the groups were statistically significant (p < 0.01). Conclusions. All demineralization treatment methods improve bonding to demineralized enamel. Resin infiltrant application after demineralization showed similar bond strength values as intact enamel.Öğe Effects of remineralization procedures on shear bond strengths of brackets bonded to demineralized enamel surfaces with self-etch systems(E H ANGLE EDUCATION RESEARCH FOUNDATION, INC, 2016) Baka, Zeliha Muge; Akin, Mehmet; Ileri, Zehra; Basciftci, Faruk AyhanObjective: To compare the effects of different remineralization procedures on the surface roughness of teeth, shear bond strengths (SBSs), and Adhesive Remnant Index scores of sel-fetching primer (SEP) used to bond orthodontic brackets to previously treated demineralized enamel surfaces. Materials and Methods: A total of 140 extracted human premolar teeth were randomly divided into seven equal groups. Group I was the control group. A demineralization procedure was performed in the other six groups. A remineralization procedure was performed before bonding by using casein phosphopeptide-amorphous calcium phosphate, fluoride, a microabrasion mixture (18% hydrochloric acid-fine pumice), a microabrasion agent, and resin infiltration in groups III to VII. Brackets were bonded using a self-etching primer/ adhesive system. The specimens were tested for SBS. The roughness and morphology of the enamel surfaces were analyzed using profilometer and scanning electron microscopy. Data were analyzed with analysis of variance, Tukey, and G-tests at the alpha = .05 level. Results: Significant differences were found in the SBS values among the seven groups (F = 32.69, P = .003). The lowest SBS value was found in group II (2.62 +/- 1.46 MPa). No significant differences were found between groups I, III, and VII, between groups III and IV, or between groups V and VI. The differences in the roughness values were statistically significant among the groups (P = .002). Conclusions: Remineralization procedures restore the decreased SBS of orthodontic brackets and decrease surface roughness caused by enamel demineralization. SEPs provide clinically acceptable SBS values for bonding orthodontic brackets to previously treated demineralized enamel surfaces.Öğe Evaluation of antibacterial effects of contemporary orthodontic bonding materials(TAYLOR & FRANCIS LTD, 2017) Baka, Zeliha Muge; Eldeniz, Ayce Unverdi; Guneser, Mehmet Burak; Basciftci, Faruk AyhanAim: The aim of this study was to evaluate the antibacterial effects of five orthodontic bonding materials commonly used in orthodontics. Materials and Methods: The antibacterial effects of five orthodontic bonding materials were evaluated against Streptococcus mutans and Streptococcus salivarius by direct contact test (DCT). Using the DCT technique, quintet specimens of Transbond XT, Blugloo, Grengloo, Light Bond, and Opal Bond were applied to the bottom and the walls of the five wells of a 96-microtiter plate with a height of 2 mm. Samples were prepared in two sets: 1-day samples and 7-day samples. Ten microliters of bacterial suspension were added to each well for direct contact with each material for 1h at 37 degrees C. Bacterial growth was then measured in a microplate spectrophotometer hourly at 600 nm for 24h. Five uncoated wells with identical inoculum sizes served as positive controls. The data obtained at the end of 24h was statistically analyzed with one-way ANOVA, and post hoc comparisons were done using Tamhane's T2 test. Results: Blugloo generally showed better antibacterial activity than the other materials. Transbond XT did not show any antibacterial activity. There was a statistically significant difference between Transbond XT and Light Bond in the 1-day sample against S. mutans (p<0.05). No statistically significant differences were found among the other groups (p>0.05). Conclusion: Blugloo had the most potent antibacterial activity against S. salivarious.
