The purpose of this study was to find out whether there were changes in occlusal plane inclination after fixed orthodontic treatment of bimaxillary protrusion cases where extraction of four first premolars were needed using the standard Edgewise appliances. The sample were fourteen orthodontic patients, aged above sixteen years old, no sexual discrimination, treated with fixed appliances at Orthodontic Specialist Clinic Faculty of Dentistry Universitas Padjadjaran. The method was pre-post design which compared occlusal plane inclination obtained from tracings of lateral cephalograms before and after orthodontic treatment. The results were calculated with the paired t-test analysis. The study revealed that there were no significant changes in occlusal plane inclination after the orthodontic treatment.

Introduction: Power chains is the common device used in fixed orthodontic treatment. Force decay in power chains is a problem that can affect the teeth movement due to a continuous force cannot be maintained. Force decay in power chain can be affected by the use of alcohol-containing mouthwash or alcohol-free mouthwash. The objective of this study was to determine the effect of alcoholic-containing mouthwash, alcohol-free mouthwash, and artificial saliva towards the power chains force decay. Methods: This research was an experimental analytic laboratory in-vitro with the comparative approach. The sample in this study were 40 power chain, short A (SA); 40 power chain, short B (SB); 40 power chain, long A (LA); and 40 power chain, long B (LB), which divided into 5 groups that were consecutively exposed to the artificial saliva as control group; Minosep® with 0.1% of chlorhexidine gluconate; Listerine® with 0% of alcohol; Hexadol® with 9% of alcohol; and Listerine® with 26.9% of alcohol. The measurement of force decay was performed with digital force gauge on day 0, 1, 14, and 28. The statistical analysis was done by using the Wilcoxon and Mann-Whitney tests. Result: There was a significant difference (p<0.05) between the force decay of power chain that exposed to the alcohol-containing mouthwash, alcoholfree mouthwash, and the artificial saliva. Conclusion: The force decay level of power chain that exposed to an alcohol-containing mouthwash was higher compared to the force decay level of power chain that exposed to an alcohol-free mouthwash and an artificial saliva.

Introduction: Index of Orthodontic Treatment Need (IOTN) was first developed by Brook and Shaw (1989) as a system for grading malocclusions, has 2 components, AC (Aesthetic Component) that shows patient’s subjective needs and DHC (Dental Heath Component) that reveals objective needs for orthodontic treatment. The objective of this research was to know the severity of malocclusion based on IOTN index of orthodontic patients at Post Graduate Orthodontic Clinic Faculty of Dentistry Universitas Padjadjaran from year 2009 to 2010. Method: This descriptive research was done by using data from dental study models of the patients and anterior scale photographs of the patients from the Orthodontic PPDGS students, Faculty of Dentistry Universitas Padjadjaran.  Result: The result of this research shows DHC  59.63% of the patients had definite need for treatment, while 27.52% of the patients had borderline need for treatment and the rest 12.85% of the patients had no need or little need for orthodontic treatment. Meanwhile, according to AC, 49.54% of the patients had no need or little need for treatment, while 33.03% of the patients had definite need for treatment and 17.43% of the patients expressed borderline need for treatment. Conclusion: In a nut shell, by using DHC of IOTN, the highest percentage of patients is in definite need for treatment category. However by using AC of IOTN, the highest percentage of patients is in no need or little need for treatment category.

The purpose of this research is to measure the change of soft tissue profile, both anteroposteriorly as well as vertically in skeletal class II patients with mandibular retrognathy cases, treated with extraction of the maxillary first premolars. Pre and post treatment result of 16 patient treated with the Standard Edgewise fixed appliance were compared using a Canon D646u series scanner and Corel Draw 12 computer programme, utilizing the TVL line as a plane of orientation. The result was analyzed with a paired t-test. Statistical analysis shows significant anteroposterior and vertical soft tissue changes in facial profile in skeletal class II patients with mandibular retrognathy treated with extraction of maxillary first premolars using the Standard Edgewise fixed appliance, measured with the STCA-VTL method.

This study was carried out to find the effects of angle of Gable bends and amount of activations of 0.016 x 0.022 inch NiTi and TMA sectional T-loop springs to the force moment and moment delivered. The design of the research is true in-vitro laboratory experimental design, to measure the force, moment. and moments, an axial moment device was designed purposely. The samples were 30 springs comprised of 15 NiTi and 15 TMA with variations of Gable bends 0˚-0˚, 10˚-10˚, and 20˚-20˚ Force, moment and moments were measured at 1, 2, and 3 mm amount of activations. Data was tested statistically using the ANAVA with 3x2x3 factorial designs and 5 replications for each all. The results showed that angle of Gable bends, amount of activations and type of wires significantly affect the force and moments delivered, but the angle of Gable bends significantly affect moment. It could be concluded that the greater angle of Gable bends will produce the greater force and moments. The greater amount of activations will produce the greater force and moments.