Interdisciplinary orthognathic treatment of high angle class III malocclusion

For Class III adult patients, combined treatment strategy must be followed which includes either further dentoalveolar compensation or orthognathic surgery following decompensation of the teeth. This case report presents the interdisciplinary approach of a skeletal Class III malocclusion with increased vertical facial dimension, occlusal cant, extracted posterior teeth on the right upper and left lower segments, extensive restorations, and total circular crossbite. The orthodontic alignment took 10 months. LeFort 1 osteotomy with 7 mm advancement, 5 mm impaction on the left side, 3 mm impaction on the right side and 2 mm rotation for midline correction toward the left side, 3 mm set.back of mandible with bilateral sagittal split osteotomy were done. The surgery simulation, postoperative and 2 year follow up records were compatible. The treatment was finalized in a straight profile with stable occlusion and good smile characteristics without airway disturbance.Key words: Interdisciplinary treatment, orthognathic surgery, skeletal Class II

Comparison of Outcomes of Recorded Lecture and Hands-on Course Education in Orthodontic Cast Analysis

Purpose:The aim of this study was to compare recorded lecture education (RLE) and hands-on course education (HCE) via the test of orthodontic cast analysis lesson, which is prepared according to the Structure of the Observed Learning Outcomes (SOLO) taxonomy.Methods:In our single-blinded, randomized, cross-sectional study, 87 students (45 female, 42 male) were divided into 2 groups. In the first group, HCE was used; the second group was given an RLE. One week later, 5 questions prepared by SOLO taxonomy were given to both groups. For scores of intergroup comparisons, the Mann-Whitney U test was used, and for intragroup comparisons, the Kruskal-Wallis test was used.Results:There was no statistically significant difference between the groups’ gender distribution (p.0.05). Examination scores of girls and boys did not differ significantly (p.0.05). There was a statistically significant difference in the comparison of average of scores in the HCE group (p,0.05). There was also a statistically significant difference in the average of scores of the RLE group. The averages of scores of the HCE group were found to be significantly higher than RLE group scores (p,0.05), excluding the first, fourth, and fifth questions.Conclusion:Hands-on course education, to which the students are accustomed and with which students are more comfortable asking questions in the classroom and expressing their opinions easily, have higher success rates when compared with RLE

TRAVMATİZE OLMUŞ DİŞLERİN ENDODONTİK VE ORTODONTİK TEDAVİ YAKLAŞIMLARI

Dental travmalar sıkça karşılaşılan vakalar arasındadır. Süt ve daimi dişlerde meydana gelen dental travmalar fonksiyonel bozukluklara neden oldukları gibi estetik olarak da problem oluşturmaktadırlar. Travma hikayesiyle kliniğe başvuran hastanın klinik ve radyolojik değerlendirmeleri yapıldıktan sonra uygun tedavi seçenekleri değerlendirilmelidir. Travma sonrası ortodontik tedavi görme oranının yüksek olması nedeniyle yapılacak ortodontik tedavinin yöntemi, diş hareketinin zamanlaması ve uygulanan kuvvet miktarı önem kazanmaktadır. Bu derleme dental travmaya maruz kalmış dişlere uygulanacak ortodontik tedavi yaklaşımlarının özellikleri ile ilgili bilgi vermeyi amaçlamaktadır

Treatment of Class II Maxillary Retrusion Case Using Miniscrew (Nonextraction Treatment of Adolescent Patient)

Objective:This case report describes the protocol employed in the treatment of a patient with Class II subdivision malocclusion, with sagittal, transverse, and occlusal disharmonies.Materials and Methods:Treatment included the expansion of the maxilla with a banded Hyrax appliance over a period of 14 days. After a retention period, the device was removed and a stainless steel transpalatal arch was attached. The maxillary arch was bonded with MBT prescription brackets, and distalization of the left maxillary first molar commenced on a 0.01630.022-inch stainless steel archwire supported by a miniscrew for indirect anchorage. After 4.7 mm of molar distalization, a Nance appliance with a bite plane was placed, and the mandibular arch was bonded to continue treatment, which lasted 18 months. Mandibular and maxillary fixed retainers were placed at the end of active treatment.Results:Pretreatment and posttreatment records showed that vertical and sagittal skeletal cephalometric findings were stable.Conclusion:A nonextraction and miniscrew anchorage approach for distalization is an effective treatment option for dental Class II correction

Antibiotic mediated synthesis of gold nanoparticles with potent antimicrobial activity and their application in antimicrobial coatings

We report a one-pot synthesis of spherical gold nanoparticles (52-22 nm) and their capping with cefaclor, a second-generation antibiotic, without use of other chemicals. The differently sized gold nanoparticles were fabricated by controlling the rate of reduction of gold ions in aqueous solution by varying the reaction temperature (20-70 C). The primary amine group of cefaclor acted as both the reducing and capping agent for the synthesis of gold nanoparticles leaving the b-lactam ring of cefaclor available for activity against microbes. Antimicrobial testing showed that cefaclor reduced gold nanoparticles have potent antimicrobial activity against both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria as compared to cefaclor or gold nanoparticles alone. The minimum inhibition concentrations (MICs) of cefaclor reduced gold nanoparticles were 10m gmL1 and 100m gmL1 for S. aureus and E. coli respectively. The cefaclor reduced gold nanoparticles were further coated onto poly(ethyleneimine) (PEI) modified glass surfaces to obtain antimicrobial coatings suitable for biomedical applications and were tested against E. coli as an exemplar of activity. The antimicrobial coatings were very robust under adverse conditions (pH 3 and 10), inhibited the growth of E. coli on their surfaces, and could be used many times with retained activity. Results from a combined spectroscopic (FTIR) and microscopic study (AFM) suggest that the action of these novel particles is through the combined action of cefaclor inhibiting the synthesis of the peptidoglycan layer and gold nanoparticles generating "holes" in bacterial cell walls thereby increasing the permeability of the cell wall, resulting in the leakage of cell contents and eventually cell death

Antiplaque Effect of Essential Oils and 0.2% Chlorhexidine on an In Situ Model of Oral Biofilm Growth: A Randomised Clinical Trial

This work was supported by project PI11/ 01383 from Carlos III Institute of Health (General Division of Evaluation and Research Promotion, Madrid, Spain), which is integrated in National Plan of Research, Development and Innovation (PN I+D+I 2008-2011). This project was cofinanced by European Regional Development Fund (ERDF 2007- 2013

Evaluation of corrosion resistance and surface characteristics of orthodontic wires immersed in different mouthwashes

PubMedID: 27886000Background: Patients use mouthwashes in addition to mechanical cleaning during orthodontic treatment. The effects of mouthwashes on the archwires have not been examined yet. Objective: To compare the corrosion resistance of four different arch wires and corrosion effects of different mouthwashes to formulate a biocompatible and mechanically useful arch wire and mouthwash combination. Methods: Each group comprised of 4 wire samples of 2 cm 0.016 × 0.022 inch. 1st group: ion implanted nickel titanium (INT), 2nd group: nickel titanium, without ion implantation (NT), 3rd group: micro layered esthetic nickel titanium (ENT), 4th group: stainless steel (SS) wires. They were immersed inside 2 ml of artificial saliva solutions (AS) for the control, or AS (9%) combined with 1 of the 3 mouthwashes (91%) for study groups, for 24 hours. These mouthwashes were essential oil (EO), chlorhexidine (CHX), sodium-fluoride (NaF). An electrochemical analyzer was used for electrochemical impedance spectroscopy measurements. Results: High corrosion resistance was obtained for ENT than the other wires. The corrosion potentials are 0.007, -0.042, 0.074 and -0.015 V (Ag/AgCl) for ENT, INT, SS and NT in the artificial salivary, respectively. In NaF containing mouthwash Rp value of ENT is significantly high in comparison to others. The impedance responses of all materials increased significantly in the presence of NaF mouthwash as well as in the CHX mouthwash. Low frequencies are seen at all materials in EO mouthwash. Diameters of loops are 22, 5.9, 5.9 and 3.7 M? at ENT, INT, SS and NT. Conclusions: In this study, micro layered esthetic nickel titanium wires are found biocompatible among other wires and NaF and CHX mouthwashes can be recommend for their good corrosion resistance during fixed orthodontic therapy. © 2016 - IOS Press and the authors. All rights reserved