Latar belakang: Masalah utama kesehatan gigi dan mulut pada anak ialah karies gigi. Karies gigi merupakan suatu penyakit yang kompleks, yang diawali dengan adanya asam yang akan menghancurkan mineral-mineral gigi. Asam yang diproduksi mempengaruhi mineral gigi sehingga menjadi sensitif pada pH rendah. Ketika pH turun menjadi di bawah 5,5, proses demineralisasi menjadi lebih cepat dari remineralisasi. Hal ini menyebabkan lebih banyak mineral gigi yang luluh dan membuat lubang pada gigi. Berbagai upaya dilakukan untuk mengurangi masalah gigi ini dengan meningkatkan pH saliva yang bersifat asam. Salah satu cara yang digunakan adalah kontrol plak yaitu secara mekanik dan kimiawi Tujuan: Mengetahui efek penggunaan air kelapa hijau (Cocos nucifera Linn Var. Viridis) sebagai obat kumur terhadap pH saliva anak usia 12 tahun. Metode: Penelitian ini menggunakan eksperimental laboratoris dengan rancangan Pretest-Posttest Eksperimental : Controlled-Group Design dengan metode purposive sampling di Pondok pesantren Nurul Islam Jember sebanyak 27 orang. Hasil dan Kesimpulan: Hasil penelitian menunjukkan bahwa setelah berkumur dengan air kelapa hijau (Cocos nucifera Linn Var. Viridis) terdapat perubahan yaitu terjadi penurunan pH saliva anak usia 12 tahun. Kata Kunci: Perbedaan, pH Saliva, Air Kelapa Hijau, Chlorhexidine, Karies.

Nanohybrid resin composite is one of the restorative dental materials that has goodaesthetic value and smooth surface. However, resin composite can be discolored due toconsuming foods and beverages, one of which is a carbonated beverage. To determine the difference of discoloration of polished and unpolished nanohybrid resin compositeafter the immersion in carbonated beverage. An experimental laboratories research withthe post test only control group design. In the group of polished composite, polishing wasdone on one side only, while the unpolished composit group, any treatment wasn't done.The total were 32 samples, divided into 4 groups which were immersed in carbonatedbeverages and artificial saliva for 7 days. The shredded material was replaced every 24hours. The instrument used for testing the discoloration was a spectrophotometer. Datawas analyzed by parametric statistical test One-way ANOVA and LSD (Least SignificantDifferent). There were significant differences between the unpolished composite resin thatsoaked in carbonated beverages and the other groups (p <0.05). Unpolished resincomposite are prone to discolorate compared to the polished resin composite

Staphylococcus aureus is bacteria identified in the root canal of infected teeth by 20%, resistant and isolated from secondary root canal treatment. NaOCl 2.5%has toxic properties and causes irritation when pushed into periapical tissue. Green okra fruit (GOF) extract has antibacterial secondary metabolite compound i.e.flavonoids, alkaloids, saponins, tannins and terpenoids. This research was carried out to determine inhibition of GOF extract against S.aureus. Inhibition test useddisc diffution method which consisted of 5 research groups, i.e. GOF with concentration of 1.563%, 3.125%, 6.25%, and 12.5%, and 2.5% NaOCl; the ave-rage diameter of the inhibition zone of the concentration of GOF extract were 0 mm, 0 mm, 14.51 mm, 17.95 mm, and 24.56 mm, respectively. It was concluded that GOF extract has inhibition against of S.aureus starting from concentration of 6.25%. Green okra fruit extract has inhibition close to NaOCl 2.5% against S.aureus at concentration of 12.5%.

(p=0,004). It can be concluded that the overall perceptions of the rural community is poor. Key words: perception, denture using, tooth loss ABSTRAK Persepsi setiap individu terhadap pemakaian gigitiruan berbeda-beda dipengaruhi oleh jumlah dan lokasi kehilangan gigi, usia, jenis kelamin, gangguan fungsional, estetis, kebudayaan, sosioekonomi, dan pendidikan. Penelitian ini bertujuan untuk mengetahui persepsi masyarakat yang mengalami kehilangan gigi terhadap pemakaian gigitiruan berdasarkan kelompok usia, jenis kelamin, dan tingkat pendidikan di Desa Ujung Rambung Kecamatan Pantai Cermin Kabupaten Serdang Bedagai pada bulan Februari 2010. Penelitian bersifat observasional analitik. Jumlah sampel 200 orang yang kehilangan minimal satu gigi, tetapi tidak termasuk gigi molar tiga. Uji chi-square menunjukkan tidak ada hubungan yang signifikan antara persepsi penampilan, pengunyahan, dan pengucapan dengan kelompok usia, antara persepsi penampilan, pengunyahan, dan pengucapan dengan jenis kelamin, dan antara persepsi pengunyahan dan pengucapan dengan tingkat pendidikan (p>0,05). Akan tetapi, ada hubungan signifikan antara persepsi penampilan dengan tingkat pendidikan (p=0,004). Disimpulkan bahwa persepsi masyarakat secara keseluruhan menunjukkan hasil yang buruk.

Background: Loss of tooth structure is a consideration in the performance of restorative treatment involving nanofilled composite resins. Material polymerization factors and water absorption can affect the hardness of composite resins. Imperfect polymerization producing an oxygen inhibited layer (OIL) and causing water absorption can even compromise the hardness of nanofilled composite resins. Tamarind soft drink, on the other hand, has an acidic pH that compromises the hardness of nanofilled composite resins. Purpose: This study aimed to reveal the effects of glycerin application on the hardness of nanofilled composite resins immersed in tamarind soft drinks. Methods: The research constituted a laboratory experiment using 24 nanofilled composite resin samples with diameters of 5mm or 2mm, divided into six groups, namely: Group G, Group G AS 60, Group G AS 120, Group TG, Group TG AS 60, and Group TG AS 120. Glycerin was applied to the surfaces of three groups before curing, while the other three groups were not treated with glycerin. Finishing was subsequently conducted on all samples using a highspeed handpiece and superfine finishing bur, before they were polished with a low speed handpiece. The samples were then divided into specific groups, namely: a group with a 120-minute immersion time, a group with a 60-minute immersion time, and a group which was not immersed and maintained at a temperature of 37 o C. Each sample was tested at three points using a Vickers hardness tester (VHT). Results: The results showed that the groups with glycerin had a higher hardness level than those groups. In addition, the non-immersed groups had a higher hardness level than those groups which were immersed. The one-way ANOVA test results confirmed that there was a statistically significant difference (p<0.05) between all groups. Conclusion: The application of glycerin to nanofilled composite resins immersed in tamarind soft drinks can increase their hardness levels.