Browsing by Author "Pamukcu, H."

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Does Le Fort I osteotomy have an influence on nasal cavity and septum deviation?
(2020) Atakan, A.; Ozcirpici, A. A.; Pamukcu, H.; Bayram, B.; 0000-0003-4242-5114; 32031100
Aims: Le Fort I (LI) osteotomy has been used for the correction of dento-facial deformities of the midface. The aim of this study was to determine the effects of advancement and impaction of the maxilla with LI osteotomy on the nasal cavity and septum. Patients and Methods: In this study, 40 adult patients, 23 females and 17 males (mean age 20.52 +/- 4.4 years), who underwent single-piece LI advancement and impaction surgery combined with a bilateral sagittal split osteotomy (BSSO) were included. Posterior-anterior (PA) and lateral cephalometric radiographs taken before surgery (T0) and at least three months after surgery (T1) were evaluated. The superior and anterior movements of maxilla, changes of the nasal cavity, nasal septum and maxillo-mandibular parameter were measured on the cephalometric radiographs. Treatment changes were statistically analyzed using paired sample t-test, and Pearson correlation analysis was applied for the determination of the relationship between variables. Results: There was no statistically significant change in the deviation parameters (P > 0,05). However, a statistically significant decrease was found for left and right nasal cavity heights after LI osteotomy (P < 0.05). Furthermore, no significant correlation was found between septal deviation angle and extent of maxillary movement (P > 0.05). Positive correlation was found between nasal cavity width and amount of maxillary impaction. (P < 0.05). Conclusion: The influence of maxillary impaction with LI osteotomy on nasal septum deviation was not found significant but maxillary impaction with LI osteotomy significantly increased the nasal cavity width.
Effects of Repeated Bracket Bonding on Enamel Color Changes
(2018) Tuncer, N. I.; Pamukcu, H.; Polat-Ozsoy, O.; https://orcid.org/0000-0002-3284-8220; https://orcid.org/0000-0003-4242-5114; 30156191; HLV-7691-2023; HJA-8023-2022
Objectives: The objective of the study is to evaluate the effects of repeated bracket bonding on the color changes of tooth enamel after in vitro coloration. Materials and Methods: Eighty-one premolars were equally divided into three groups. Samples in Group 1 (G1) represented nonorthodontic treatment patients, and the enamel surfaces were left intact. Samples in Group 2 (G2) and Group 3 (G3) represented orthodontic treatment patients with no repeated bonding and brackets bonded 3 times, respectively. After the brackets were bonded in G2 and G3, samples in all groups were kept in four different staining solutions for 96 h and received 24 h of photoaging. This cycle was repeated 3 times. Brackets were debonded and rebonded in G3 samples after each cycle, whereas brackets were only debonded once in G2 samples after the third cycle. The color changes were assessed using a spectrophotometer at baseline (T1) and after removing the brackets and cleaning the enamel surface (T2). Data (Delta E) were analyzed statistically with analysis of variance between groups, and with Paired t-test within groups. Results: Although the color changes for G1, G2, and G3 were significant (P < 0.05) within groups; the difference was similar between groups (P > 0.05). Conclusion: Repeated bracket bonding does not have a negative influence on the enamel color change after in vitro coloration when compared with intact enamel surface and single bonding.
In vitro and in vivo Comparison of Orthodontic Indirect Bonding Resins: A Prospective Study
(2018) Pamukcu, H.; Ozsoy, O. Polat; Dagalp, R.; https://orcid.org/0000-0003-4242-5114; 29735863; AAZ-4624-2021
Objective: The aim of this study was to evaluate in vitro shear bond strength (SBS) and in vivo bond survival rates of brackets bonded using orthodontic indirect bonding resins. Materials and Methods: For the in vitro study, the first group was direct bonding control group. In Groups II and III, bonding was performed with indirect bonding resins that were either chemically or light-cured. The SBS of each sample was examined. For the in vivo study, full-mouth brackets were placed in 20 patients using a split-mouth approach, with either chemically-cured or a light-cured indirect bonding resin. The patients were followed for 12 months. Data were statistically evaluated using analysis of variance, Tukey's tests, and Weibull survival analysis. Results: The mean SBS values (MPa) were 17.6 +/- 6.6, 13.1 +/- 4.7, and 15.1 +/- 5.9 for Group I, Groups II, and III, respectively, (P < 0.05). The adhesive remnant index scores of the groups were generally Score 3 and Score 4. In vivo follow-up showed no statistically significant differences in total bond failure rate between groups (P > 0.05). Conclusions: In vitro study showed lower SBS with chemically-cured indirect bonding resin than flowable light-cured resin and the control group, but in vivo failure rates of both indirect resins were found to be adequate for clinical usage.