No abstract

The purpose of this study is to know the prevalence of horizontal pattern bone deffect compare to vertical pattern that found in periodontal disease. Material and Methods: In this study, sample selected by purposive sampling according to inclusion criteria, samples with periodontitis that diagnosed clinically approved by periodontist, and the sample also have diabetic diseases that having measure their sugar level blood test 3 months before the study, and then measure it again before taking the radiograph. Results: The horizontal pattern that found in periodontitis in patient that sustain diabetes mellitus in this study might occur due to bone damage that developed in long period and without treatment. Conclusion: This study shows the prevalence of bone damage pattern was the pattern of horizontal obtained 76.3%, vertical pattern is found at 23.7%. The horizontal pattern that found mostly in periodontitis in patient that sustain diabetes mellitus in this study might occur due to bone damage that developed in long period and without treatment.

Periodontitis is typically associated with disorders characterized by compromised tooth-supporting tissue. Damage to periodontal tissue is caused by an imbalance between matrix metalloproteinases and their inhibitors. Decreased tissue inhibitor and elevated matrix metalloproteinase levels result in collagen connective tissue and bone degradation. Several studies have shown that high levels of matrix metalloproteinase-13 (MMP-13) and low levels of tissue inhibitor of metalloproteinase-1 (TIMP-1) are also found in gingival crevicular fluid and saliva of patients with periodontitis. The purpose of this study was to determine the comparison of MMP-13 levels, TIMP-1 levels of saliva and bone density in patients with chronic periodontitis before and after scaling and root planning (SRP). The study samples were selected from patients who came for treatment at the Periodontics Installation of Universitas Sumatera Utara. A total of 16 patients were selected (n = 16) with a diagnosis of chronic periodontitis. The result showed that salivary MMP-13 levels in chronic periodontitis patients before SRP were higher than salivary MMP-13 levels after SRP and the difference was statistically significant (p < 0.05). It was also revealed that salivary TIMP-1 levels and alveolar bone density in chronic periodontitis patients before SRP were lower than that after SRP and the difference was statisticallysignificant (p < 0.05). There was a positive correlation between clinical parameters and salivary MMP-13 levels in patients with chronic periodontitis before and after SRP, but it was not statistically significant (p > 0.05). There was a negative correlation between clinical parameters and salivary TIMP-1 levels in patients with chronic periodontitis before and after SRP, but it was not statistically significant (p > 0.05).

No abstract

First permanent molar mandible had already errupted in  6-7 years old and the root formation completes at age of 9-10 years. The root formation of first permanent mandible starts at 5 years and 3 months old, which in radiograph shows as radiopaque area that appear below the crown line, and the root development become half of the root formation at 6 years and 2 months old. This stage of first permanent mandible root development can be associated with age estimation. The aim of this study was to determine the stage of the root development, the shape and lenght of the first permanent molar mandible in children aged 6-10 years old in periapical radiograph. The radiograph was placed on the viewer box and marked the edge of cemento enamel junction and the tip of apex root by pencil and placed the tip of calipper on the two point that have been marked then measured the leght using a ruler. Measurement of the roots length were taken for mesial and distal of each tooth and noted the root shape that assessed form the radiograph. The result of this study shown that the lenght of first permanent mandible of 6-10 years old was in the range of 5,5 -14 mm for mesial root an 4,5 – 12 mm for distal root. The majority of root development shape was at stage R ¾ at 6 years (71,4 %), at 7years (100 %), at 8 years (85,7%) and at the age of 9 years old 85,7% of root shape was at stage Rc and 57,1 % of the rooot shape of the 10 years old was at stage Ac, which stage means the root formation already complete. As a conclusion, the mesial root length appears longer than the distal length with the root lenght varies on the age of 6-10 years old. The root development shape of 6 and 7 until 8 years old mostly shows the root already formed ¾ of root formation, then at 9 years old the root shape become complete but the apex not yet, and at 10  years  old the stage of the root shape already complete which shown by the closed of the root apex completly.

Periodontal ligaments are one of the supporting tissues of teeth that undergo remodeling during the tooth movement process. Vitamin C deficiency inhibits the regeneration of collagen fibers, which are important in tissue remodeling that affects the widening of the periodontal ligament space during the process of tooth movement. The widening of periodontal ligament space can be seen by taking radiographic photos. The purpose of this study was to determine the width of the periodontal ligament space of guinea pigs by administering vitamin C, without vitamin C, and the differences between the two groups. Those samples were grouped into four groups with observation times of 1, 4, 7, and 10 days, and each group consisted of the control group and vitamin C group. Those samples were paired with orthodontic separator rubber. After the specified time was completed, periapical radiographs were taken, and the width of the periodontal ligament space was measured by using Image J software. The mean width of the periodontal ligament space in the vitamin C group was smaller than the control group. Based on this study, it can be concluded that vitamin C has an effect on reducing periodontal ligament space in the process of tooth movement.   Key words: periodontal ligament space, vitamin C, tooth movement, remodeling

Health is very important to always pay attention to. Healthy behavior can affect the health of everybody. Dental and oral health is a part of general health, and to keep teeth and mouth healthy can be done with the right techniques and ways to brush teeth. Based on Basic Health Research, dental and oral diseases still occur in North Sumatra province, both urban and rural. Therefore, through the Community Service Institution at USU, a community service activity was carried out under the title Improvement of Dental and Mouth Health through the Counseling for Dental and Oral Health Care for Children of Melati Aisyiah SLB Orphanage Homes in Bandar Khalifah. This activity is based on the need to maintain oral health from an early age so that good behavior in maintaining health can be accustomed from childhood. In addition, there are only a few orphanage children who realize correctly the importance of dental health for general health. Counseling on the maintenance of dental and oral health in children of the SLB Melati Aisyiyah Orphanage, Bandar Khalifah can provide a deep understanding of the importance of maintaining oral health by brushing teeth early on.

Introduction: Facial profile can be influenced by edentulous condition that can change mandibular morphology that can affect mastication, digestion and psychosocial life. Edentulism causes absence of occlusal mechanical stimulus, decrease the activity of mastication muscles and increase mandibular bone resorption. These changes can be assessed using panoramic radiography by looking at the vertical dimension of the head of the condyle and its shape, ramus, and the angle of the mandible. The aim of the study was to assess the mean value and differences of mandibular morphology in edentulous and dentate patients using panoramic radiography. Materials and Methods: This was an analytical study with cross-sectional approach using purposive sampling methods. 50 dentate and edentulous patients who came to Dentistry Hospital of University of Sumatera Utara were used as sample. Data analysis was done using Independent T test and MannWhitney test. Results: Results showed that the average value of gonial angle, ramus height, condylar height, antegonial notch depth and ramus notch depth in edentulous patients were 125,38 ± 9,51; 35.98mm ± 4.26; 5.58mm ± 0.90; 2.11mm ± 1.04; and 2.73mm ± 0, 88, and the results showed that the average value of mandibular morphology in dentate patients were 123.34 ± 7.07; 38.15mm ± 3.23; 6.95mm ± 1.25; 1.41mm ± 0.77; and 2.15mm ± 0.59. Conclusion(s): There were significant differences in the values of ramus height, condylar height, antegonial notch depth, and ramus notch depth. Difference was also found in gonial angle value, but was not statistically significant.