Akademik Arşiv / Academic Archive
Permanent URI for this community
Browse
Browsing Akademik Arşiv / Academic Archive by Author "ACAR, YASEMİN BAHAR"
Now showing 1 - 19 of 19
Results Per Page
Sort Options
Publication Metadata only Alveolar and anterior maxillary distraction in patients with orofacial clefts(John Wiley & Sons, Inc., 2023-01-01) ACAR, YASEMİN BAHAR; MOTRO M., ERVERDİ A. N., ACAR Y. B.Publication Open Access Comparison of differential maxillomandibular movements on the upper airway in anteroposterior dimensions after bimaxillary surgery for class III correction(2022-10-01) ERDEM, NECİP FAZIL; ACAR, YASEMİN BAHAR; ERDEM N. F., ACAR Y. B., ÇİFTÇİ ŞİŞMAN A.Amaç: Sınıf 3 maloklüzyonun düzeltilmesi için farklı bimaksiller cerrahi planların üst hava yolunun ön-arka boyutlarına etkisini değerlendirmek. Gereç ve Yöntem: Sınıf 3 düzeltimi için bimaksiller cerrahi ile tedavi edilen 59 birey (ortalama yaş: 23.11±1.85 yıl) dahil edildi. Ameliyat öncesi (T1) ve ameliyat sonrası (T2) lateral sefalogramlar analiz edilerek kafa kaidesi üzerinde çakıştırıldı. A ve B noktalarının yatay hareketlerinin miktarlarına göre 3 grup oluşturuldu. Grup-1: (n=21) B noktasının yer değiştirmesi A noktasından büyüktü. Grup-2: (n=13) A ve B noktalarının yer değiştirmeleri arasındaki fark ≤1mm idi. Grup-3: (n=25), A noktasının yer değiştirmesi B noktasından büyüktü. Ön-arka faringeal hava yolu boyutları (mm), arka (PAS), üst-arka (SPAS), orta (MAS), alt (IAS), epiglottik (EAS) hava yolu boşluklarında ölçüldü. Sınıf içi değerlendirme Paired sample t testi ve Wilcoxon testi ile yapıldı. Sefalometrik değişiklikler için sınıflar arası karşılaştırmalar ANOVA ve Tukey testi ile değerlendirilirken, hava yolu değişiklikleri için Welch ANOVA ve Kruskal-Wallis testleri yapıldı. Hava yolu parametrelerinin ikili karşılaştırmaları Bonferroni düzeltmeli Mann-Whitney u-testi ile yapıldı. Birincil yordayıcı ve sonuç değişkenleri arasındaki ilişkiyi değerlendirmek için Pearson korelasyon analizi yapıldı. Sonuçlar: Maksiller yükseklik, palatal düzlem, SNA, SNB, ANB, Wits, N-Perp, maksiller derinlik toplam örnekte önemli ölçüde değişti. Mandibular düzlemdeki ve SNB’deki değişiklikler Grup-1’de daha yüksekti (p<0.05). SNA, N-PERP, maksiller derinlikteki değişiklikler Grup-3’te daha yüksekti (p<0.05). Toplam örnekte PAS (ortalama:2.44±2.21mm; medyan:2.17mm) ve SPAS (ortalama:1.07±2.31mm; medyan:1.14mm) oldukça anlamlı artış gösterdi. Grup-1’de İAS anlamlı olarak azaldı (ortalama: – 1,98±3,68 mm; ortanca: – 1,36 mm). Grup-2’de önemli bir faringeal değişiklik yoktu. Grup-3’te PAS (ortalama:3.03±2.20mm, ortanca:2.63mm) ve SPAS (ortalama:1.64±1.81mm, ortanca: 1,74mm) anlamlı olarak arttı. Toplam örnek, PAS ve SNA arasında (r=0.335); ve IAS ve B noktası arasında (r=0.275) anlamlı pozitif doğrusal zayıf ilişki ortaya koydu. Grup-3’te PAS ve SNA ölçümleri arasında anlamlı pozitif doğrusal orta ilişki vardı (r=0.613). Sonuç: Farklı kombinasyonlardaki maksillomandibular hareketler üst hava yolunun ön-arka boyutları üzerinde belirgin olarak farklı etkiler göstermiştir. Klinisyenler, hava yolu üzerindeki etkilerini göz önünde bulundurarak ameliyat planlamasını dikkatli bir şekilde yapmalıdır.Publication Open Access DIRECT USAGE OF MINISCREW ANCHORAGE TO INTRUDE OVERERUPTED MAXILLARY POSTERIOR TEETH BEFORE PROSTHODONTIC PREPARATION: A CASE REPORT(ISTANBUL UNIV, FAC DENTISTRY, 2016-01-12) ACAR, YASEMİN BAHAR; Acar, Yasemin Bahar; Ates, MustafaOvereruption of maxillary molars due loss of opposing teeth creates occlusal and functional interferences. Before reconstruction can be initiated, intrusion of overerupted molars becomes essential. This report illustrates treatment of overerupted maxillary premolar and molar via direct use of miniscrew anchorage. A 24-year old female had lost first and second left mandibular molars due to pulpal necrotizing agents, resulting with a large alveolar bone defect and overerupted maxillary premolar and molar. She had a history of unsuccessful alveolar distraction of mandibular left premolars to increase the alveolar bone height prior to implant placement. Patient was satisfied with her smile and refused comprehensive orthodontic treatment. Maxillary premolar and molar were intruded segmentally for 4mm in 8 months, using a combination of a mini-implant and partialfixed edgewise appliances. Biological responses of teeth and surrounding bony structures to intrusion appeared normal and acceptable in radiographic and clinical examination.Publication Metadata only Distraksiyon osteogenezi ve AWDA apareyi(Quintessence, 2017-01-01) ACAR, YASEMİN BAHAR; ERVERDİ A. N., ACAR Y. B.Publication Open Access Does maxillary protraction with Alt-RAMEC protocol affect inferior sclera exposure? A controlled 3dMD study(2022-03-01) ÖNEM ÖZBİLEN, ELVAN; ACAR, YASEMİN BAHAR; YILMAZ, HANİFE NURAY; ACAR Y. B., YILMAZ H. N., ÖNEM ÖZBİLEN E.Objective: The purpose of this controlled retrospective study was to measure and evaluate the inferior sclera exposure changes using 3dMD stereophotogrammetric images in a prepubertal Class III patient sample that underwent maxillary protraction with alternate rapid maxillary expansions and constrictions protocol followed by facemask. Methods: The study group included 15 prepubertal patients (mean age: 9.85 ± 1.44 years) with Class III malocclusion due to maxillary retrognathism. Nine weeks of alternate rapid maxillary expansions and constrictions protocol was followed prior to 7 months of face mask treatment and 3 months of retention with Bionator. Pretreatment (T0) and post-retention (T1) lateral cephalometric radiographs and 3dMD images were retrieved from clinical archive. The same records were used for a control group of 15 well-matched, untreated patients (mean age: 9.4 ± 0.79 years). The distance between the upper eyelid margin and the lower eyelid margin was recorded as the overall eye height (E), and the distance between inferior limbus and the lower eyelid margin was recorded as inferior sclera exposure (S). The S : E ratio in percentage was calculated. Sella-nasion-A point angle (SNA) was used as the skeletal variable. Results: SNA angle, right S : E, and left S : E changed significantly in both groups at T1-T0. The intergroup comparison was highly significant for SNA angle but was not significant for right and left S : E variables. Conclusion: The S : E ratio decreased significantly in both alternate rapid maxillary expansions and constrictions/facemask and the control groups. However, the change in S : E ratio between groups was not significant.Publication Metadata only Evaluation of airway changes after orthognathic surgery with maxillomandibular advancement or maxillary advancement and mandibular setback(2021-06-26) ACAR, YASEMİN BAHAR; ACAR Y. B.Introduction/Purpose: The relationship between craniofacial morphology and airway has been well documented in the literature. Surgical changes in jaw positions create reorganization in the surrounding tissues i.e. soft palate, tongue and pharynx; depending on the magnitude and direction of correction. Therefore, oropharyngeal changes caused by orthognathic surgery can affect the airway function. Aim of the present study was to evaluate upper airway changes in two different orthognathic surgery modalities: 1) Bimaxillary Advancement, 2) Maxillary Advancement+Mandibular Setback. Method: Sample in this retrospective study was derived from clinical archive of Orthodontic department in Marmara University. Preoperative (T1) and 6-12 months postoperative (T2) lateral cephalometric radiographies of 24 adult subjects (mean age: 22,3 ± 1,8 years), who underwent bimaxillary orthognathic surgery, were analyzed and superimposed. Direction and amount of horizontal displacement of A-point and B-point were recorded to define surgical movements. Patients were then divided into two groups: Group 1 (n=13) included maxillary advancement+mandibular setback. Group 2 (n=11) included maxillomandibular advancement. Pharyngeal airway changes were measured at posterior (PAS), superoposterior (SPAS), middle (MAS), inferior (IAS) and epiglottic airway spaces (EAS). For intragroup changes Paired sample t-test and Wilcoxon’s test; for intergroup changes Two independent samples t-test and Mann-Whitney U-test were used. Pearson Correlation analysis was performed. Findings: In both groups SNA, SNB,ANB, Wits-Appraisal, Nasion-perpendicular to A-point, maxillary depth values changed significantly. In Group 1, pharyngeal airway changes were nonsignificant. In Group 2 PAS, SPAS, MAS increased significantly and mean pharyngeal airway changes were significantly higher than Group 1. In Group 2, significant and powerful correlation was found between SNB and IAS (r=0,800) and EAS (r=0,719). Conclusion: Mandibular setback did not cause significant reduction in airway when applied in combination with maxillary advancement. Maxillomandibular advancement significantly increased the upper airway parameters and a powerful correlation was observed between SNB and IAS, EAS in this group.Publication Open Access Hounsfield Units: A new indicator showing maxillary resistance in rapid maxillary expansion cases?(E H ANGLE EDUCATION RESEARCH FOUNDATION, INC, 2015-01) ACAR, YASEMİN BAHAR; Acar, Yasemin Bahar; Motro, Melih; Erverdi, A. NejatObjective: To determine if density measurements of several maxillary regions in Hounsfield Units (HU) and outcomes of rapid maxillary expansion (RME) are correlated. Is correlation powerful enough to give us direct information about maxillary resistance to RME? Materials and Methods: Twenty-two computed tomographic (CT) scans (14 years) are used in this archive study. Two CT records were collected, one before RME (T-1) and one after 3 months of retention period (T-2). Maxillary measurements were made using dental and skeletal landmarks in first molar and first premolar slides to measure the effects of RME. Density of midpalatal suture (MPSD) and segments of maxillary bone is measured in HU at T-1. Correlation analysis was conducted between density measurements and maxillary variables. Regression analysis was then performed for variables that showed positive correlation. Results: There was no correlation between density and skeletal measurements. Intermolar angle (ImA) in molar slice showed statistically significant correlation with density measurements. The ImA variable showed the highest correlation with MPSD in frontal section (r = 0.669, P < .01). Conclusions: There is correlation of 32.1-43.3% between density measurements and ImA increase. Our density measurements explain a certain percentage of ImA increase, but density is not the only and definitive indicator of changes after RME.Publication Open Access In-vitro evaluation of the effects of insertion and sterilization procedures on the mechanical and surface characteristics of mini screws(ISTANBUL UNIV PRESS, ISTANBUL UNIV RECTORATE, 2019) ACAR, YASEMİN BAHAR; Hergel, Civan Aved; Acar, Yasemin Bahar; Ates, Mustafa; Kucukkeles, NazanPurpose The aim of the present study was to investigate the effects of insertion and sterilization on primary stability and to examine the mechanical and surface characteristics of mini screws. Materials and methods 140 miniscrews (70 Dual-Top; 70 Ortho-Easy) were divided into 3 groups. Group 1: control group, 10 miniscrews of each brand, evaluated without any primary procedure. Group 2: 30 miniscrews of each brand, each inserted into the sawbone once, then sterilized and tested. Group 3: 30 miniscrews of each brand, each inserted into the sawbone twice, sterilized after each insertion and then tested. The miniscrews were evaluated for changes in primary stability, mechanical and surface characteristics with scanning electron microscopy (SEM) analysis, torsion tests, maximum insertion-removal torques and vertical-horizontal pull out strength tests. Results The maximum insertion torque values of the unused miniscrews (Group 1) were found to be significantly higher than those of the reused (Groups 2, 3) mini screws (p<0.05). Removal torque, vertical-horizontal pull-out strength and torsional strength value changes were found to be statistically insignificant. In SEM analysis, wear and atrophy were seen on the threads of used miniscrews especially in the apical region and the oxide layer was seen to have disappeared from some regions of the coated miniscrews. Conclusion Although wear and atrophy were detected in SEM analysis of used miniscrews, the overall primary stability and fracture torque resistance tests did not show any significant changes after the first and second insertion and sterilization procedures.Publication Metadata only Is Counterclockwise Rotation With Double Jaw Orthognathic Surgery Stable in the Long-Term in Hyperdivergent Class III Patients?(W B SAUNDERS CO-ELSEVIER INC, 2018) ERDEM, NECİP FAZIL; Acar, Yasemin Bahar; Erdem, Necip Fazd; Acar, Ahmet Huseyin; Erverdi, Ahmet Nejat; Ugurlu, KemalPurpose: To evaluate the long-term postsurgical stability of counterclockwise rotation of the occlusal plane (OP) in double-jaw orthognathic surgery in patients with hyperdivergent Class III malocclusion. Materials and Methods: This retrospective cohort study evaluated the postsurgical stability of orthognathic surgery in patients with skeletal Class III malocclusion and counterclockwise rotation of the maxillomandibular complex with an OP change of at least -2 degrees. Patients were evaluated with lateral cephalometric analysis before surgery, immediately after surgery, and at longest follow-up. The primary predictor variable was the change in angle of the OP and the Frankfort horizontal (FH) after surgery. The primary outcome variable was stability of the OP at longest follow-up. Other study variables were age, gender, and the following cephalometric measurements: mandibular plane angle; gonial angle; angle formed by the sella, nasion, and B point; maxillary height; angle of the palatal plane to the line connecting the sella and nasion; and distances of the posterior nasal spine and A point to the FH and of the A point to the vertical line passing from the nasion. The Mann-Whitney U test was used to compare stability between groups because the variables were not normally distributed. Bonferroni correction was used to evaluate P values. The chi(2) test and Fisher exact test, where appropriate, were used to compare the proportions of groups. A P value less than .05 was accepted as statistically significant. Results: The sample was composed of 15 adult patients (mean age at surgery, 23.5 yr; 40% men). The median duration of follow-up was 48 months (interquartile range, 36 to 60 months). The groups had similar demographic properties and similar surgical changes. Ten patients showed very stable results with an OP-FH change no greater than 1 degrees. Four patients showed unstable results with an OP-FH change of 2.25 +/- 0.5 degrees during the follow-up period. The change in the mandibular plane angle was notable between patients with stability and those with instability, which was the variable most affected by relapse of the OP. Conclusion: This study found long-term postsurgical skeletal stability of counterclockwise rotation of the OP during double-jaw orthognathic surgery in patients with high angle Class III malocclusion after a median follow-up of 48 months. (C) 2018 American Association of Oral and Maxillofacial SurgeonsPublication Metadata only Kemik yaşı tayini(Quintessence, 2017-01-01) ACAR, YASEMİN BAHAR; ACAR Y. B.Publication Metadata only Multidisciplinary treatment approach for correction of facialasymmetry: 3 cases(2019-11-05) ACAR, ZEYNEP AHÜ; ACAR, YASEMİN BAHAR; YILDIRIM, GAMZE; BÜYÜKAKÇA M., YILDIRIM G., ACAR Y. B., BİREN S., ACAR Z. A.AIM: Ideal treatment planning for the correction of severe skeletal malocclusion is orthodontics combined with orthognathic surgery. This poster aims to present multidisciplinary treatment of 3 cases with Class III malocclusion and mandibular deviation. MATERIAL-METHOD: Three female patients with the chief complaints of mandibular prominence and facial asymmetry were admitted to treatment in our clinic. Case 1, clinically had asymmetrical face, adequate lip closure, normal smile-line, concave profile; dental Class III relationship and posterior openbite on the right. Lateral cephalometric evaluation showed SNA:75°, SNB:79°, ANB:-4°, I-SN:104 °, IMPA:87 °, Witts:- 4.5mm and low angle vertical growth pattern. Postero-anterior cephalometric measurements revealed 1.0mm shifting of menton to left and 3° counterclockwise occlusal cant. Case 2 had asymmetric face, insufficient lip closure, low smile-line, convex profile; dental Class III relationship and circular openbite. Cephalometric values showed SNA:79°, SNB:77°, ANB:2°, I-SN:106°, IMPA:78°, Witts:-13mm and high angle vertical growth pattern. Menton point was shifted 10.6 mm to left and the occlusal cant was 2° counterclockwise. Case 3 had asymmetrical face, adequate lip closure, normal smile-line, flat profile; dental Class III relationship, crossbite on the left posterior and edge-to-edge bite at the anterior region. CephalometricvaluesshowedSNA:83°,SNB:81°,ANB:2°,I-SN:105°,IMPA:86°,Witts:-5.5mmandhigh angleverticalpattern. Menton pointwas 6.4 mm to left and occlusalcantwas 3° counterclockwise. Non-extraction orthodontic decompensation treatment was planned and patients underwent orthognatic surgery when model surgery displayed stable occlusion. The total duration of treatment was 25, 20 and 19 months, respectively. CONCLUSIONS: Class I molar and canine relationship, ideal overbite and overjet were achieved with the orthodontic and surgical treatment. Sagittal and transversal jaw relations were improved and facial symmetry was improved. As a result, patients were provided with good function and satisfactory aesthetics.Publication Open Access Orthodontic treatment and oral hygiene from the patients’ perspective(2022-12-01) ACAR, YASEMİN BAHAR; BULUT B., KAYHAN S., ACAR Y. B.Objective: Present study aims to investigate patients’ oral hygiene habits, their perspective of the relationship between orthodontic treatment and periodontal health, and the effectiveness of oral hygiene education (OHE). Materials and Methods: In this cross-sectional study, subjects were randomly selected among the patients who were under active fixed orthodontic treatment. 100 patients with a mean age of 16.4 years (range: 13-28 years) was included. Patients were asked to join a paper-based survey of 20 questions at the end of their routine orthodontic session. At the end of survey, group A received OHE conventionally on a dental model using orthodontic and interdental toothbrushes; group B received OHE visually with a digital video on a personal digital assistant (PDA). Patients were asked to reply the last question after the OHE to assess the retention of key concepts from the education. Results: 46% believed that orthodontic materials are harmful for their oral health and 39% thought that orthodontic treatment and oral hygiene are independent. 36% confirmed that they received OHE, and 25% of these patients do not think that OHE helps with their orthodontic treatment. 88% of the patients stated that the OHE given at the end of the survey was beneficial while the remaining 12% found it unhelpful. Conclusion: Patients were unable to realize the benefits of OHE adequately at the first bonding session. The use of audiovisual animations like short digital videos were found to be more effective method for patient education compared to conventional methods.Publication Open Access Ortodontik Tedavi Sonrası Ektopik Maksiller Kaninlerin Keratinize Dişeti Genişliğindeki Değişim(2022-08-01) ACAR, YASEMİN BAHAR; ACAR Y. B., Kılıç H. E.Amaç: Vestibülde ve infraoklüzyonda bulunan ektopik kaninlerin ortodontik tedavisi amacıyla birinci premolar çekimi uygulanmış vakalarda, üst kaninlerin keratinize dişeti genişliğindeki değişimleri incelemektir. Gereç ve Yöntemler: Bu kontrollü klinik çalışmada, üst kanin dişleri vestibülde ektopik bulunan (>2 mm) ve birinci premolar çekimli ortodontik tedavi uygulanmış 50 bireye (ortalama yaş: 18.1 yıl) ait 63 maksiller kanin diş çalışma grubunu oluşturmuştur. Kontrol grubu olarak, çekimsiz ortodontik tedavi uygulanmış ve tedavi sırasında üst kanin dişlerinde klinik olarak belirgin bir dikey hareket olmayan (≤2 mm) 20 bireye (ortalama yaş: 15.8 yıl) ait 20 maksiller kanin diş kullanılmıştır. Tedavi öncesi (T1) ve tedavi sonrası (T2) ağız içi fotoğraflar, geleneksel alçı modeller ve panaromik radyografi kayıtları kullanılmıştır. Ağız içi frontal fotoğraflarda kanin dişin keratinize dişeti genişliği ölçülmüştür. Kanin dişlerin dikey yöndeki yer değişimi sert damak düzlemi referans alınarak panoramik röntgenler üzerinde ölçülmüştür. Bulgular: Çalışma ve kontrol gruplarında kanin dişin dikey yer değişimi oklüzal yönde ve istatistiksel olarak anlamlı (sırasıyla 3.45 mm, p=0.000; 0.73 mm, p=0.013) bulunurken; keratinize dişeti genişliğinde anlamlı artış (sırasıyla 1.23 mm, p=0.000; 0.25 mm, p=0.016) bulunmuştur. Çalışma grubunda ölçülen değişimler cinsiyet ve yaştan bağımsız (p>0.05) ve kontrol grubuna göre anlamlı olarak daha yüksektir (p=0.000). Dikey yer değişimi ile dişeti genişliğindeki artışın ilişkisi incelendiğinde, dikey hareketin 2-4 mm olduğu örneklemde anlamlı korelasyon bulunamazken (r=0.01); ≥4 mm olduğu örneklemde yüksek korelasyon (r=0.563) bulunmuştur. Sonuç: Ektopik kaninlerin ortodontik tedavisi sonrasında ağız içinde gerçekleşen klinik dişeti artışını ve bu artışın dikey hareket miktarı ile pozitif yönlü ilişkisini gösteren kontrollü bir klinik çalışma olması sebebiyle sonuçlar anlamlıdır. Diş Eti, Düzeltici Ortodonti, Ektopik Diş ÇıkmasıPublication Metadata only Periodontitisli hastalarda ortodontik tedavi(Türkiye Klinikleri, 2021-01-01) ACAR, YASEMİN BAHAR; ACAR Y. B., ACAR Z. A.Toplumda ortodontik tedavinin sadece çocukluk ve ergenlik döneminde değil, her yaştaki bireyde uygulanabileceğine dair farkındalığın artmasıyla birlikte tedavi için kliniklere başvuran erişkin hastaların sayısı giderek artmaktadır. Bu erişkin hastaların arasında farklı şiddette ve yaygınlıkta periodontitise sahip olgular da yer almaktadır. Periodontitisli hastalarda ortodontik tedavinin hedefi hastanın birincil şikayeti olan estetik görünümün düzeltilmesinin yanı sıra hastanın periodontal sağlığının idame ettirilebilmesi ve gerekiyorsa protetik rehabilitasyona kolaylık sağlayacak bir diş dizilimi ve oklüzyonun tesis edilmesidir. Ortodontik tedavi öncesinde, sırasında ve sonrasında gerekli tedbirlerin alınması koşuluyla ve ortodontist, periodontist ve hasta işbirliği ile başarılı sonuçlar elde etmek mümkündür.Publication Metadata only Şiddetli çapaşıklık ve sınıf II maloklüzyona sahip hastanın forsus apareyi ile tedavisi: Olgu sunumu(2021-03-12) YILDIRIM, GAMZE; ACAR, YASEMİN BAHAR; Yıldırım G., Acar Y. B.AMAÇ:Sınıf II malokluzyonlarbüyüme modifikasyonu, kamuflaj tedavisi ya da ortognatik cerrahi ile tedaviedilebilmektedir. Sabit fonksiyonel apareyler büyüme atılımının sonunda olan veya kooperasyon problemi bulunan hastalarda tercih edilmektedir. Bu vaka raporu şiddetli çapraşıklık ve Sınıf 2 divizyon 1 maloklüzyona sahip bir hastanın forsus apareyi ile sabit fonksiyonel tedavisini sunmaktadır.OLGU:Kronolojik yaşı 13 yıl 5 ay olan erkek hasta üst ve alt anterior bölgedeki şiddetli çapraşıklık şikayetiyle kliniğimize başvurmuştur. Hastanın ekstraoral muayenesinde herhangi bir asimetri bulunmazken, konveks bir profile sahip olduğu gözlenmiştir. Yapılan intraoral klinik muayenede her iki tarafta da sınıf 2 molar ve kanin ilişkiyle beraber 9 mm overjet ve 3 mm overbite gözlenmiştir. Üst orta hat 1 mm, alt orta hat 3 mmsağa deviye bulunmuştur. Sefalometrik değerlendirmede SNA: 78, SNB: 73, ANB: 5 ve IMPA: 84 derece olarak ölçülmüştür. Tedavi planında akrilik cap splint ile 2 haftalık RPE sonrasında, 0.017x0.025 SS arktelinde sabit fonksiyonel bir aparey olan forsus apareyi ile çekimsiz sabit ortodontik tedavi yapılmasına karar verilmiştir. Dişler seviyelendikten sonra 6 ay süreyle forsus apareyi uygulanmıştır. Vakanın tedavisi bilateral Sınıf I kanin ve molar ilişki, ideal overjet ve overbite sağlanarak başarıyla bitirilmiştir. Debonding sonrası üst ve alt çeneye sabit retainerlar uygulanmıştır. Toplam tedavi süresi 25 aydır.SONUÇ:Bu vaka raporu şiddetli dişsel Sınıf II divizyon 1 maloklüzyonun sabit fonksiyonel apareyler kullanılarakbaşarılı bir şekilde tedavi edilebileceğini göstermiştir.Publication Metadata only Tek taraflı dudak-damak yarıklı hastada ideal gülüş estetiği kazandırılmasında ortodontik-protetik işbirliği - olgu sunumu(2021-03-12) ACAR, YASEMİN BAHAR; YILDIRIM, GAMZE; Yıldırım G., Acar Y. B.AMAÇ:Bu olgu sunumunun amacı burun, dudak ve alveol kretini etkileyen sol tek taraflı dudak-damak yarıklı hastanın, sabit ortodontik apareyler ve protetik restorasyon ile multidisipliner olarak tedavisinin anlatılmasıdır.OLGU:Takvim yaşı 12 yıl 4 ay olan pubertal atılım dönemindeki erkek hastada intraoral olarak açık kapanış, Sınıf II molar ve kanin ilişkisi, yarık hattına komşu bölgede lateral diş eksikliği, sürme bozukluğu ve üst ön dişlerde mine deformasyonları ve şiddetli çapraşıklık ile birlikte maksiller darlık tespit edilmiştir. Panoramik radyografide sol tarafta alveol kreti ve sert damağı içine alan yarık hattı izlenmiştir. Lateral sefolametrik incelemede ise iskeletsel Sınıf I ilişki ile birlikte keser eğimlerinde azalma gözlemlenmiştir. Geç karma dişlenme döneminde olan hastada alt çenede lingual ark; üst çenede ise transvers yönde yetersizlik sebebiyleQuad-heliks aygıtları ile tedaviye başlanmıştır. Üst ve alt çenede sabit ortodontik apareyler ile hizalanma sonrası, eksik olan 22 numaralı dişin protetik rehabilitasyonu için yer açılması planlanmıştır. Tedavi sonrasında intermaksiller elastiklerin kullanımı ile Sınıf I molar ve kanin ilişkisi sağlanmıştır. Üst ve alt kesici dişlerin açılanmaları ideal değerlerine getirilerek 22 numaralı diş, 13-24 numaralı dişler arasında metal destekli seramik köprü uygulaması ile rehabilite edilmiş olup; vaka ideal overjet ve overbite ilişkisinde sonlandırılmıştır.SONUÇ:Dudak-damak yarıklı hastalarda; yarık bölgesindeki dişlerde sürme problemleri, şekil bozuklukları, dişlerin kuronlarında mine deformasyonları veya diş eksiklikleri görülebilir. Ayrıca yarık bölgesine komşu dişlerde destek kemik kaybında azalma ve dişeti çekilmeleri de gözlenebilir. Bu vakada mine deformasyonları ile 11ve 21 numaralı dişlerin alveol kretinde yer alan defekt oluşumu metal destekli seramik veneer yardımıyla giderilmiştir. Ayrıca keser açılanmaları ideal değerlerine getirilerek istenilen düzeyde dudak projeksiyonu sağlanmıştır. Tedavi sonunda Hawley plak ve sabit retainerlar ile pekiştirme yapılmaktadır.Publication Metadata only The relationship between circummaxillary and intramaxillary suture densities and the skeletal effects of rapid maxillary expansion(2023-01-01) ABUHAN, ECE; ACAR, YASEMİN BAHAR; BAŞAL E., ACAR Y. B.Publication Metadata only Treatment outcome and long-term stability of class II correction with forsus fatigue resistant device in non-growing patients(WILEY, 2021) ACAR, YASEMİN BAHAR; Zitouni, Mohammad; Acar, Yasemin BaharObjectives Forsus (TM) Fatigue Resistant Device (FRD) is one of the commonly used semirigid fixed functional devices. Purpose of the present study was to investigate effects and long-term stability of Class II correction following use of Forsus FRD in a retrospective clinical study. Setting and Sample Population Records of 20 patients (mean age 18.3 +/- 2.5 years) with Class II malocclusion, who had undergone fixed functional treatment protocol with Forsus FRD, were collected from our clinical archive. Materials and Methods Lateral cephalometric radiographs at pre-treatment (T0), end of comprehensive treatment (T1) and post-retention period (T2, mean duration: 19 +/- 3 months) were analysed and superimposed to assess skeletal and dental changes on the long-term. Repeated measurement one way ANOVA was used for the study of the significant differences among the mean values of cephalometric parameters at T0, T1, and T2. To analyse the nature of the bilateral significant differences between two different time points, Bonferroni test was used. Results Sagittal and vertical skeletal changes at T0-T1 were statistically insignificant while all dentoalveolar parameters exhibited highly significant changes. At T1-T2, all skeletal and dentoalveolar parameters were stable except the slight relapse in overjet (0.3 +/- 0.5 mm;P < .05). At T0-T2 interval, no significant skeletal changes were recorded while the dentoalveolar changes remained significantly improved. Conclusion Correction of Class II malocclusion achieved with Forsus FRD was dentoalveolar and treatment effects were stable in the 19 +/- 3 months follow-up period.Publication Metadata only Treatment outcomes of archwise distraction osteogenesis in mandibular dentoalveolar retrognathia cases(CHURCHILL LIVINGSTONE, 2017) ACAR, YASEMİN BAHAR; Yondem, C.; Acar, Y. B.; Sener, B. C.; Erverdi, A. N.The aim of this study was to describe the treatment of class II malocclusion by sagittal advancement of the alveolar bone in the symphyseal area using an intraoral archwise distractor device and to determine the effects of this method on the dentoalveolar complex. Fifteen patients (10 female, five male) aged 16-20 years with a class II division 2 malocclusion, characterized by mandibular dentoalveolar retrusion and a prominent chin, underwent archwise alveolar distraction in the anterior mandible. Lateral cephalometric radiographs were obtained before distraction (TO), after 6 weeks of consolidation (T1), and after debonding (T2). Linear and angular skeletal, dental, and soft tissue measurements were performed. Forty-seven parameters were measured for each of the 15 subjects on pre- and postoperative lateral cephalometric radiographs (TO, T1, and T2). The distraction protocol was successful in all patients. Skeletally, the mandible showed a clockwise rotation. B-point moved forward significantly (P < 0.05). Overjet decreased significantly (P < 0.001). The total profile angle was unaffected, and the improvement in the submental fold was highly significant (P < 0.001). The intraoral archwise distraction force that is applied through brackets and archwires is sufficiently effective for alveolar advancement. This procedure is simple and effective in the treatment of specific adult patients with a class II division 2 malocclusion, characterized by a prominent chin and severe mandibular dentoalveolar retrusion.