Resin akrilik heat cured merupakan material yang paling sering digunakan dalam pembuatan basisgigi tiruan. Seiring perkembangan ilmu pengetahuan dan teknologi, termoplastik nilon juga menjadipilihan bagi material basis gigi tiruan. Material basis gigi tiruan mempunyai kekurangan pada sifatfisiknya, diantaranya adalah kekasaran permukaan. Kekasaran permukaan dapat terjadi pada resinakrilik heat cured dan termoplastik nilon diantaranya disebabkan karena terpaparnya material denganlarutan yang mengandung asam, salah satunya adalah kopi. Penelitian ini dilakukan untuk mengetahuiperbedaan kekasaran permukaan antara resin akrilik heat cured dan termoplastik nilon sebelum dansetelah direndam dalam larutan kopi Ulee Kareng (Coffea robusta). Jumlah spesimen pada penelitianini ada 8 spesimen, 4 resin akrilik heat cured Meliodent dan 4 termoplastik nilon BIO TONE denganukuran 20x20x2 mm. Spesimen direndam dalam larutan kopi selama 4 hari (mensimulasikanmengkonsumsi larutan kopi selama 1 tahun) dengan larutan kopi diganti setiap hari. Kekasaranpermukaan sebelum dan setelah perendaman diukur menggunakan alat surface roughness tester. Hasiluji t berpasangan pada kedua kelompok menunjukkan perbedaan bermakna kekasaran permukaansebelum dan setelah perendaman (p<0.05), hasil uji t tidak berpasangan antara resin akrilik heat cureddan termoplastik nilon sebelum perendaman menunjukkan terdapat perbedaan bermakna (p<0.05) dansetelah perendaman juga menunjukkan perbedaan bermakna (p<0.05). Nilai kekasaran permukaanresin akrilik heat cured lebih tinggi dibandingkan termoplastik nilon setelah direndam dalam kopiUlee Kareng (Coffea robusta).Kata Kunci: Resin akrilik, termoplastik nilon, kopi

Introduction:The absorption of fluid in the heat cured acrylic resin is able to cause the increase in surface roughness. Absorption of acidic fluid such as soft drinks can cause even higher increase of surface roughness. The objective of this study was to determined the effect of soft drinks towards heat cured acrylic resin denture base surface roughness. Methods: Specimens of this study were 32 pieces of specimen with the size of 12×12×3 mm. Sixteen pieces of specimens were kept in aquadest as a control group and 16 pieces of specimens were immersed in the soft drinks as the treatment group. Initial surface roughness was measured using surface roughness tester. The specimens were then immersed in both immersion media for 2 days. After immersion, the surface roughness of specimens were measured again. Results: Data obtained on the roughness measurements were analyzed using paired t test with the results of the analysis showed a significant difference (p<0.05). Conclusion: It was concluded that there was increased in heat cured acrylic resin denture base surface roughness after immersed in soft drinks solvent.

Resin akrilik heat cured merupakan material yang sering digunakan dalam pembuatan basis gigi tiruan. Resin akrilik sering direndam dalam larutan pembersih gigi tiruan untuk menghilangkan mikroorganisme. Infusa daun kemangi 50% terbukti dapat menurunkan jumlah koloni Candida albicans sehingga dapat digunakan sebagai bahan alternatif pembersih gigi tiruan. Namun, resin akrilik heat cured bersifat menyerap cairan yang diduga dapat menyebabkan perubahan dimensi. Penelitian ini bertujuan untuk mengetahui pengaruh durasi perendaman resin akrilik heat cured dalam infusa daun kemangi 50% terhadap perubahan dimensi. Spesimen pada penelitian ini berjumlah 20 buah dan berbentuk silinder berukuran diameter 50 ± 1 mm d an tebal 1 ± 0.5 mm. Data yang diperoleh dianalisis menggunakan uji Friedman dan diuji lanjut dengan Wilcoxon. Hasil analisis menunjukkan terdapat perbedaan yang bermakna (p˂0.05) perubahan dimensi resin akrilik heat cured setelah perendaman dalam infusa daun kemangi 50% antara setiap kelompok durasi perendaman. Perbedaan yang tidak bermakna hanya terdapat antara kelompok setelah perendaman 5 dan 7 hari dengan nilai p>0.05. Kesimpulan dari penelitian ini adalah adanya pengaruh durasi perendaman resin akrilik heat cured dalam infusa daun kemangi 50% terhadap perubahan dimensi.Kata kunci: Resin akrilik heat cured, kemangi

Background: Acrylic removable partial denture can be cleaned by brushing method, soaking, or a combination of both. The level of cleanliness of acrylic removable partial denture affected by frequency, the cleaning method, the duration of usage and dentist instructions. The main objective of this study is to determine the level of cleanliness of acrylic removable partial denture based on the brushing cleaning method and duration of usage. Method: The subject in this study were 32 people that wear acrylic removable partial denture in the residential complex of PT. Arun NGL with purposive sampling technique. This study's scoring was based on Reddick et al studies to determine the level of cleanliness of acrylic removable partial denture. Result:The results of this study showed that the subjects which using the brushing cleaning method, were 53,1% in cleaned category, 31,3% of the subjects was dirty category, and 15,6% were very dirty category. Conclusion:The conclution of this study is the level of majority subjects whose cleaning their denture by using the brushing method included to clean category in duration of usage from 0-10 years.

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Covid-19 pandemic has directed hospitals to concentrate services for patients who are positive or still in undefined status. Some countries are even forced to build temporary structures or utilize multifunctional buildings such as sports/public halls. On the other hand, hospitals still have to keep performing other routine services and this becomes a challenge for them. When global attention nowadays focuses more on how hospitals serve the Covid-19 cases, this research proposes another side of healthcare service needed by people in the pandemic, which is the dental clinic. The spread of Covid-19 through droplets puts both dental patients and practitioners at risk target of Covid-19 transmission. Therefore, particular standards and protocols are mandatory to be deployed. A prototype design of the temporary dental clinic is the main output from this research. The main objective is to provide service for the community without being afraid of contracting the pandemic as the clinic will be isolated from the regular hospital buildings. To achieve this objective, this research employed three approaches for the methodology. It was started with the desk study to review references on recent technology of temporary building structures. Followed by the online questionnaire using the Google platform distributed to 206 registered dental practitioners in Aceh, in collaboration with the Indonesian Dental Association, Aceh Province, Indonesia. The questionnaire collected the data related to the needs, standards, procedures, and dental service protocols under the Covid-19 pandemic as the main reference for the design process. The last approach was gathering feedback from dentists and international architects who are experts in building science and technology. This was done through a series of pre-design reviews. This research has a high degree of urgency globally, including Saudi Arabia, which is also impacted by the Covid-19 pandemic. It is also in line with Saudi Vision 2030 to enhance the standard quality and sustainability of healthcare services. The prototype design proposed in this research does not only contribute to the Covid-19 pandemic in particular but also post-Covid scenarios or other possible global pandemics in the future.

Introduction:Loss of teeth is a condition where one or several teeth are lost from the socket. Loss of one or several anterior teeth can cause esthetic disruption, loss of confidence, concerns about appearance, and lost function of the teeth, thereby greatly affecting an individual's mind and activity. The loss of some or all of the teeth has many impacts, one of which is the emotional impact. Emotional impact is a feeling or assessment reaction that is derived from the nervous system in response to stimuli from the outside or inside due to loss of teeth, which is known through the categories affected, avoidance, depression, irritability, embarrassment, and feeling old.

Sodium Hipoklorit (NaOCl) merupakan desinfektan yang sangat efektif untuk membersihkan basis gigi tiruan.Namun, penggunaan dari bahan kimia ini dapat menurunkan kekuatan impak dari basis resin akrilik. Penelitianini dilakukan untuk mengetahui pengaruh larutan sodium hipoklorit dengan konsentrasi 2% dan 5% terhadapkekuatan impak basis gigi tiruan resin akrilik. Penelitian ini menggunakan 30 spesimen resin akrilik QC-20berukuran 50 x 6 x 4 mm. Spesimen dibagi ke dalam 3 kelompok perendaman; konsentrasi 2% NaOCl, 5%NaOCl dan kelompok kontrol. Perendaman dilakukan selama 5 hari 1 jam 40 menit yang mensimulasipemakaian larutan desinfektan selama 1 tahun. Masing-masing kelompok perendaman diuji dengan charpyimpact tester dengan kecepatan impak sebesar 2,9 m/detik dan energi pendulum sebesar 1 joule. Dataselanjutnya dianalisis dengan Analisis Varian (ANOVA). Hasil analisis menunjukkan bahwa terdapat perbedaanyang signifikan (p< 0,05) antara larutan perendaman terhadap kekuatan impak. Sebagai kesimpulan, larutansodium hipoklorit dapat menyebabkan perubahan kekuatan impak basis gigi tiruan akrilik.