Hyaluronic acid application has been proven to be beneficial in a number of medical disciplines. The aim of the current study was to clinically evaluate the effect of local application of hyaluronan gel in conjunction with periodontal surgery. Fourteen patients with chronic periodontitis having four interproximal intrabony defects (≥3 mm) with probing depth values >5 mm were included in this split-mouth study. Following initial nonsurgical periodontal therapy and re-evaluation, defects were randomly assigned to be treated with modified Widman flap (MWF) surgery in conjunction with either 0.8% hyaluronan gel (test) or placebo gel (control) application. Clinical attachment level (CAL), probing depth (PD), gingival recession (GR), plaque index (PI), and bleeding on probing (BOP) values were taken at baseline and 3 and 6 months. Differences between test and control sites were evaluated using a Wilcoxon signed-rank and a McNemar test. A Friedman and a Cochran test were used to test equal ranks over time. Statistically significant differences were noted for CAL and GR (P < 0.05) in favor of the test sites. No significant differences were found regarding PD, BOP, or PI values (P > 0.05). Hyaluronan gel application in conjunction with periodontal surgery appears to result in significant improvement of CAL and in a reduction in GR. Hyaluronan gel application appears to improve the clinical outcome of MWF surgery.

Amaç: Bu çalışmada, romatoid artrit (RA) hastalarında çok kesitli bilgisayarlı tomografi (ÇKBT) taraması ve multiplanar rekonstrüksiyon (MPR) ile temporomandibüler eklemin (TME) osseöz tutulumu değerlendirildi ve klinik, laboratuvar ve radyolojik hastalık parametreleri açısından bir ilişki olup olmadığı araştırıldı. Hastalar ve yöntemler:Çalışmaya kesin RA tanısı konmuş 24 kadın hasta (ort. yaş 35.5±6.6 yıl; dağılım 38.3-42 yıl) dahil edildi. Değerlendirme tıbbi öykü, fizik muayene ve klinik araştırma ile gerçekleştirildi. Yirmi sekiz eklemde Hastalık Aktivite Skoru (DAS28) hesaplandı ve Sağlık Değerlendirme Anketi-II (HAQ-II) yapıldı. Hastaların TME'leri TMJ klinik disfonksiyon skoruna göre değerlendirildi. El ve ayakların radyolojik evrelemesi modifiye Larsen skoru esas alınarak yapıldı. Çok kesitli bilgisayarlı tomografi bulguları, TME BT skoru kullanılarak değerlendirildi. Bulgular: Hastaların %70.83'ünde TMJ tutulumu mevcuttu. En sık rastlanan klinik TME disfonksiyon belirtileri zorlu manipülasyon ve ağrı, hassasiyet (%45.83), tık sesi (%29.17), kilitlenme (%16.67) ve takiben ağzın değişen ölçülerde açılması (%8.33) idi.. İki taraflı MRP taramasından sonra daha fazla sayıda hastada osseöz TME tutulumuna rastlandı (%83.33). En sık rastlanan bulgular mandibuler kondil erozyonları, değişen kondil pozisyonu, mandibuler subkondral skleroz, artiküler eminens düzleşmesi değişen kondil şekli ve artiküler fossa erozyonu, osteofitler, artiküler eminence erozyonu ve takiben mandibuler subkondral kistlerdi. Hastaların %41.67'sinde ağız açıklığı görünür şekilde azalmıştı. Temporomandibuler eklemin BT skoru, DAS28 ve modifiye Larsen skoru ile arasında bir korelasyon eğiliminin mevcut olduğunu gösterdi.Sonuç: Çok kesitli bilgisayarlı tomografi ve MPR, RA hastalarında klinik belirtiler ve hastalık aktivitesi ile ilişkili TME tutulumunun hesaplanmasında tanısal açıdan güvenilir bir yöntemdir. Semptomatik TME olan RA hastaları için erken değerlendirme büyük önem taşır.Anahtar sözcükler: Multiplanar rekonstrüksiyon; çok kesitli bilgisayarlı tomografi; romatoid artrit; temporomandibuler eklem. Objectives:In this study, we aimed to assess the osseous involvement of temporomandibular joint (TMJ) in rheumatoid arthritis (RA) patients by multislice computed tomography (MSCT) scanning with multiplanar reconstruction (MPR), and to find any relation to the clinical, laboratory and radiological disease parameters. Patients and methods:Twenty-four female patients (mean age 35.5±6.6 years; range 38.3 to 42 years) with definite diagnosis of RA were recruited in the study. Assessment was conducted through medical history, physical examination and clinical investigation. Disease Activity Scores in 28 Joints (DAS28) was calculated and Health Assessment Questionnaire-II (HAQ-II) used. The TMJs were assessed according to the TMJ clinical dysfunction score. Radiological grading of hands and feet was performed according to the modified Larsen score. Findings of the MSCT were assessed using the TMJ CT score.Results: Temporomandibular joint invol...

Introduction: the total volume of maxillary sinus is important for maxillofacial reconstruction, plastic surgeries and prosthetic rehabilitation. It is important to diagnose sinus hypoplasia secondary to craniofacial syndromes, sinus obliteration caused by infections or blood dyscrasis.Aim of the study: The aim of this study was to assess the accuracy of CBCT volumetric measurements of maxillary sinus using the geometric rule of pyramid volume based on CBCT linear measurements versus real skull measurements.Materials and methods: fourteen skulls were scanned using Planmeca Promax 3D MID and the maxillary sinus pyramid height, length and width were measured in cm. The volume of 24 sinuses were calculated from pyramid volume (cm 3 ) = 1/3 Height × Length × Width. The CBCT volumes and the reference standard were analyzed for error assessment using Dahelberg error and Relative Dahelberg Error.Results: 4.3-4.7% was the error obtained from CBCT volumetric measurements using the rule of pyramid volume. 0.9 correlation was detected between the CBCT volume and the reference standard, between the observers and within the same observer.Conclusion: the geometric rule of pyramid volume based on CBCT linear measurements can be used to assess maxillary sinus volume. KEY WORDS: Maxillary sinus, CBCT, linear measurements, pyramid volume, accuracy. (348) Reham Mohamed Hamdy, et al.