Introduction: The occlusal plane is very important in the stomatognathic and aesthetic dentofacial system. Manipulation of the occlusal plane plays an important role in class III malocclusion correction. For this reason, the strategy in establishing the diagnosis, prognosis and treatment plan becomes more complex, so a more comprehensive analysis of the occlusal plane inclination as a parameter of diagnosis is needed for more effective and efficient treatments. Aim: The aim of this study was to determine the comparison of occlusal plane inclination between class III and class I malocclusions and to knowing the correlation of occlusal plane inclination in class III malocclusions with the direction of facial growth. Materials and Methods: Samples were secondary lateral cephalograms collected at the Universitas Airlangga (UNAIR) Dental Hospital in October 2017-2018. Cephalograms were traced using the Orthovision TM software; then, the Mann-Whitney comparative statistical test (p<0.05) was carried out followed by the canonical correlation test. Results: Differences in class III and class I malocclusions were found in the OP-AB and OP-FH angles. The OP-AB angle is the occlusal plane inclination which has the strongest correlation compared to others. OP-AB angle is strongly correlated with horizontal growth parameter, especially theSNB. The OP-AB angle is also correlated with vertical growth parameters: the Y axis and the Facial axis. Conclusion: The OP-AB angle is a parameter that can distinguish between class III and class I malocclusions. The OP-AB angle has a strong correlation with vertical and horizontal growth directions.

Aim:The aim of this study was to analyze the differences in the size of maxillary and mandibular dental arch between Papuan males and females. Materials and Methods: An analytical cross-sectional study design was carried out in 12 Papuan males and 12 Papuan females aged above 18-25 years in the Surabaya. Raberin method was used to measure the maxillary and mandibular dental arches width in the dental cast in transversal (L33, L66, L77) and sagittal direction (L31, L61, L71). The statistical analysis was used to analyze the data normality by Kolmogorov-Smirnov test (P > 0.05). In addition, the independent t test was done to determine the differences between groups (P < 0.01). Results: The average sizes of the maxillary dental arch width in the transversal direction in

The rapid advancement of digital image processing technology is expected to facilitate human life in various aspects of life. This study aims to detect and determine the distance of a barrier object based on the detection of lines emitted by a line laser light beam using the Matlab programming language with the pixel distance calculation method. The pixel distance calculation method is used to detect lines in an image that is processed by looking at the consistency of the laser lines. This study uses a box as an object to determine the presence of obstructions from an image captured by a camera. In this study, the parameters of distance, camera angle, and line laser angle are used. Research data collection was carried out in the afternoon in a closed room with a light intensity of 10 lux. An object can be said to be a barrier if in an image there is a laser line that is broken or not at the same pixel position. However, if in an image there are consistent lines or no line changes, then the image can be said to have no barriers. Based on the evaluation of the distance accuracy calculation with data collection, it can actually be concluded that the distance accuracy when taking data is above 85%.

Background: Decision to correct the Angle class I malocclusion with mandibular second premolar impaction need a special art and knowledge. The problem is what kind the treatment planning, extraction or relocation the impaction tooth. Case: A female patient, 16 years old, mesoprosopic and good proporsion of jaw with right mandibular second premolar impaction. Case Management: Treatment was initially using fixed orthodontic appliance followed by both arches expansion. Case was corected with MBT orthodontics philosopy platform. In the final treatment, molar and canine relation was obtained class I relationship, normal overjet and overbite. Conclusion: The results of this treatment indicated that mild impaction can be corrected without surgical exposure. Expantion using archwire and open coil spring is powerfull enough for this treatment. The right decision make the simplest method for the greatests results.