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- 저자 : Ruhi Nalcaci (검색결과 3 건)
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Noncompliance screw supported maxillary molar distalization in a parallel manner
Nalcaci, Ruhi,Bicakci, Ali Altug,Ozan, Fatih The Korean Association Of Orthodontists 2010 대한치과교정학회지 Vol.40 No.4
상악 구치의 후방이동을 위한 구강 내 장치 중 환자의 협조를 필요로 하지 않는 방법은 제II급 부정교합의 개선에 성공적으로 널리 사용되고 있다. 본 연구는 스크류에 의해 지지되는 구강 내 후방이동 장치를 소개하고 그 효율성을 조사하고자 하였다. Angle Class II 부정교합으로 진단된 21명의 환자(여자 11명, 남자 10명; 평균 연령 14.9세)를 대상으로 하였다. 2개의 스크류를 incisive foramen 후방에 식립하고, 식립한 즉시 힘을 주어 상악 제1대구치의 후방이동에 사용하였다. 상악 구치를 후방이동시켜 제I급 구치관계를 얻기 위해 스크류에 의해 지지되는 구강 내 후방이동 장치를 사용하였다. 치료 전후 측모두부 방사선 사진과 3차원 모델 분석을 통해 골격 및 치아의 변화를 평가하였다. 연구결과 상악 구치는 평균 3.95 mm 후방이동하였고, 추가적인 고정원 소실 없이 제I급 구치관계를 확립하였다. 상악 대구치는 $1.49^{\circ}$ 후방경사 되었고, 회전된 정도는 좌우 각각 $0.74^{\circ}$, $0.54^{\circ}$으로 통계적으로 유의성 있는 변화를 보이지 않았다 (p > 0.05). 새롭게 고안된 장치는 스크류에 의해 지지되어 환자의 협조도를 요하지 않으며 특별한 고정원 소실 없이 구치의 치체이동을 통한 후방이동을 얻는 데 효과적인 것으로 판단된다. Objective: Intraoral noncompliance upper molar distalization techniques have gained in popularity and have subsequently found to be successful in Class II correction. The aim of the present study was to introduce a screw supported intraoral distalization appliance and investigate its efficiency. Methods: Twenty-one subjects (11 females, 10 males; average age of 14.9 years) with Angle Class II malocclusion participated in this study. Two screws were inserted behind the incisive foramen and immediately loaded to distalize the upper first molars. An intraoral screw supported distalization appliance was used to distalize the upper molars in order to achieve a Class I molar relationship. Skeletal and dental changes were evaluated using cephalometric and three-dimensional (3D) model analysis. Results: Upper molars were distalized 3.95 mm on average and a Class I molar relationship was achieved without any anchorage loss. The upper molars were tipped only $1.49^{\circ}$ and the upper right and left molars were rotated only $0.54^{\circ}$ and $0.74^{\circ}$ respectively which were statistically non-significant (p > 0.05). Conclusions: The newly designed screw supported noncompliance distalization appliance was found to be an effective device for achieving bodily molar distalization without any anchorage loss.
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A reliable method for evaluating upper molar distalization
Ruhi Nalcaci,Ayse Burcu Kocoglu-Altan,Ali Altug Bicakci,Firat Ozturk,Hasan Babacan 대한치과교정학회 2015 대한치과교정학회지 Vol.45 No.2
Objective: The aim of this study was to evaluate the reliability of measurements obtained after the superimposition of three-dimensional (3D) digital models by comparing them with those obtained from lateral cephalometric radiographs and photocopies of plaster models for the evaluation of upper molar distalization. Methods: Data were collected from plaster models and lateral cephalometric radiographs of 20 Class II patients whose maxillary first molars were distalized with an intraoral distalizer. The posterior movements of the maxillary first molars were evaluated using lateral cephalometric radiographs (group CP), photocopies of plaster models (group PH), and digitized 3D models (group TD). Additionally, distalization and expansion of the other teeth and the degrees of molar rotation were measured in group PH and group TD and compared between the two groups. Results: No significant difference was observed regarding the amount of molar distalization among the three groups. A comparison of the aforementioned parameters between group PH and group TD did not reveal any significant difference. Conclusions: 3D digital models are reliable to assess the results of upper molar distalization and can be considered a valid alternative to conventional measurement methods.
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Comparison of retention characteristics of Essix and Hawley retainers
Demir, Abdullah,Babacan, Hasan,Nalcaci, Ruhi,Topcuoglu, Tolga The Korean Association Of Orthodontists 2012 대한치과교정학회지 Vol.42 No.5
Objective: We aimed to compare the retention characteristics of Essix and Hawley retainers. Methods: Adolescents undergoing fixed appliance treatment at 2 centers were recruited for this study. Twenty-two patients (16 women and 6 men) wore Essix retainers (Essix group) while 20 (14 women and 6 men) wore Hawley retainers (Hawley group). The mean retention time was 1 year, and the mean follow-up recall time for both groups was 2 years. Two qualified dental examiners evaluated the blind patient data. Maxillary and mandibular dental casts and lateral cephalograms were analyzed at 4 stages: pretreatment (T1), post-treatment (T2), post-retention (T3), and follow-up (T4). Results: The results revealed that Essix appliances were more efficient in retaining the anterior teeth in the mandible during a 1-year retention period. The irregularity index increased in both arches in both groups after a 2-year post-retention period. The mandibular arch lengths increased during treatment and tended to return to their original value after retention in both groups; however, these changes were statistically significant only in the Hawley group. Cephalometric variables did not show any significant differences. Conclusions: The retention characteristics of both Essix and Hawley retainers are similar.
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