Plaque accumulation on internal surface of denture is a common problem among removable denture wearers. Poor denture cleanliness can increase colonization of Candida albicans and cause inflammatory reaction of denture-bearing mucosa, i.e. denture stomatitis. Objective: To find out the effect of denture cleanliness level on denture stomatitis on maxillary denture-bearing mucosa in a group of removable denture wearers who received prosthodontic treatment at Poliklinik Gigi RSMH Palembang and to investigate the denture hygiene habits of removable denture wearers. Methods: Thirty subjects participated in this study. Denture cleanliness level was assessed with disclosing solution to disclose denture plaque on internal surface of maxillary denture. Cleanliness level was graded according to Budtz-Jorgensen. Intraoral examination was done to determine any visible signs of denture stomatitis. Data referring to denture hygiene habits of removable denture wearers was collected from interview using questionnaire. Data were analyzed using the Komolgorov-Smirnov test. Results: Result of the study showed that 40% subjects had poor upper denture cleanliness. Denture stomatitis was observed on maxillary denture-bearing mucosa in 43.3% subjects. Kolmogorov-Smirnov test showed that there was a significant effect of denture cleanliness level on denture stomatitis on maxillary denture-bearing mucosa (p<0.05). Conclusion: Denture cleanliness level influence the occurence of denture stomatitis on maxillary denture bearing-mucosa in a group of removable denture wearers who received prosthodontic treatment. ABSTRAKTingkat kebersihan gigi tiruan mempengaruhi terjadinya denture stomatitis pada mukosa pendukung gigi tiruan rahang atas. Akumulasi plak pada permukaan internal basis gigi tiruan lepas merupakan masalah umum yang dapat ditemukan pada pemakai gigi tiruan lepas. Kebersihan gigi tiruan yang kurang adekuat dapat meningkatkan kolonisasi Candida albicans dan dapat menyebabkan reaksi peradangan pada mukosa pendukung gigi tiruan yaitu denture stomatitis. Tujuan: Menganalisis pengaruh tingkat kebersihan gigi tiruan terhadap terjadinya denture stomatitis pada mukosa pendukung gigi tiruan rahang atas (RA) pada pasien yang menerima perawatan gigi tiruan lepas di Poliklinik Gigi RS Moh. Hoesin (RSMH) Palembang serta untuk mengetahui bagaimana cara pasien dalam menjaga kebersihan gigi tiruan lepas. Metode: Subjek penelitian berjumlah sebanyak 30 orang. Tingkat kebersihan gigi tiruan diukur melalui pewarnaan plak pada permukaan internal basis gigi tiruan RA dengan menggunakan disclosing solution dan dinilai dengan menggunakan kriteria kebersihan gigi tiruan Budtz-Jorgensen. Pemeriksaan klinis dilakukan untuk melihat ada atau tidaknya denture stomatitis. Data mengenai cara pasien dalam menjaga kebersihan gigi tiruan lepas didapat dari hasil wawancara. Data dianalisis menggunakan uji alternatif Kolmogorov-Smirnov. Hasil: 40% subjek penelitian memiliki kebersihan gigi tiruan RA yang buruk. Denture stomatitis ditemukan di mukosa pendukung...

Hydroxyapatite (HA) is a bioceramic with excellentbiocompatible properties, and composition and crystal structure similar to apatite in the human dental structure and skeletal system. A number of researchers have attempted to evaluate the effect of the addition of HA powders to increasemechanical properties of restorative dental materials. In this study, HA was synthesized using chicken eggshell as calcium source for synthesizing HA by using precipitation technique. The aim of this study was to determine the effect of incorporation of eggshell-derived HA on the surface  hardness GIC (Fuji IX GP). Specimens were divided into two groups: group GIC without incorporation of HA as control group (n = 16) and group GIC with incorporation of 5% HA as experimental group (n = 16). Total of specimens were 32 cylinders 5mm diameter and 2mm height. Surface hardness GIC was measured with vickers microhardness tester. Data wasanalyzed by unpaired T-test. The mean of surface hardness for GIC control group was 51.37 ± 1,63VHN and the experimental group was 56.60 ± 1,22HVN. The results T-test showed a significant difference between groups (p<0.05). It can be concluded thatincorporation of eggshell-derivedHA could increasesurface hardness of GIC.

Sodium hypochlorite (NaOCl) is a powerful disinfectant used in root canal therapy, yet it has some disadvantages. There are growing interests of using extracts of natural materials containing antibacterial secondary metabolite compounds as an alternative of irrigation solution. Aim, to compare the antibacterial activity of white turmeric extracts and 2,5% sodium hypochlorite irrigant against Enterococcus faecalis. Methods, this was a quasi experimental study. White turmeric extracts at the concentrations of 75%, 50%, 25% and  10% were used as experimental groups, while 2,5% NaOCl and distilled water were the control groups. Suspensions of Enterococcus faecalis were prepared to a 0.5 Mc Farland standard and applied onto petri plates containing Muller Hinton Agar. Six wells were created in each plate, and filled with 20 mL of the test solution. Plates were incubated at 37 ° C for 24 hours. The antibacterial activity was evaluated by measuring the clear zone around the well. Data were analyzed by Kruskall Wallis and continued by Mann U Whitney. Results, the largest growth inhibition zones were produced when the test bacteria were in contact with 2,5% NaOCl (15,0233 mm). White turmeric extract 75% concentration had weak antibacterial effect, while white turmeric extract 50%, 25%, 10% concentration, and distilled water did not has antibacterial properties against Enterococcus faecalis. Conclusion, white turmeric extract 75% concentration can inhibit the growth of Enterococcus faecalis with weak antibacterial activity.

Glass Ionomer Cement (GIC) memiliki sifat-sifat yang menguntungkan sebagai material restorasi. Namun, penggunaannya terbatas karena GIC memiliki kekuatan tekan yang rendah. Berbagai penelitian dilakukan untuk meningkatkan kekuatan tekan GIC, salah satunya penambahan hidroksiapatit ke bubuk GIC. Hidroksiapatit dapat disintesis dari larutan kimia atau berbagai limbah alam, misalnya cangkang telur, melalui metode presipitasi. Tujuan penelitian ini adalah untuk mengetahui pengaruh penambahan hidroksiapatit dari cangkang telur terhadap kekuatan tekan GIC Fuji IX (GC Corporation). Pembuatan 32 silinder GIC berdiameter 4mm dan tinggi 6mm dibagi menjadi 2 kelompok, yaitu: kelompok GIC tanpa penambahan hidroksiapatit sebagai kelompok kontrol (n=16) dan kelompok GIC dengan penambahan 8% hidroksiapatit sebagai kelompok uji (n=16). Kekuatan tekan diukur dengan Universal Testing Machine. Data dianalisis menggunakan uji T tidak berpasangan. Hasil pengukuran rata-rata kekuatan tekan GIC kelompok kontrol adalah 104,33±1,36 MPa dan kelompok uji adalah 109,52±1,58 MPa. Hasil uji T pada data tersebut menunjukkan perbedaan signifikan antar kelompok (p

Background: Microleakage of RMGIC may occur due to smear layer interfere with the adhesion mechanism. Surface pretreatment to remove smear layer has been suggested. This study aims to evaluate the effect of combination surface pretreatment (dentin conditioner and acid-etch) and delayed light initiation on microleakage RMGIC restoration. Methods: Class V cavities were prepared on 32 maxillary premolars which have fulfilled inclusion criteria and randomly divided into 4 groups. Cavities were pretreated with dentin conditioner (group I and II) and acid-etch (groups III and IV). All cavities were restored with RMGIC and immediate light initiation (group I and III), delayed light initiation for 3 minutes (group II and IV). All specimens were thermo-cycled and immersed in Rhodamine-B 2% dye solution for 24 hours at 37° C. Specimens were sectioned parallel to the axis of the tooth and the extent of Rhodamine-B dye penetration was examined under a USB Digital Microscope. Results: Statistical analysis revealed significant differences between time initiation group (3 minutes and 0 minutes) (P < 0.05). T-test results showed a significant difference between groups I and IV and Group III and IV (P < 0.05). Conclusion: This study showed that there is no effect of the combined surface pretreatment and delayed light initiation on microleakage RMGIC restoration