Tindakan operasi pada daerah maksilofasial dapat mengakibatkan cacat wajah, gangguan fungsi bicara, penelanan, pengunyahan, estetik serta gangguan kejiwaan. Hilangnya kontinuitas mandibula dapat mengganggu keseimbangan fungsi mandibula, menyebabkan gerakan mandibula yang berubah-ubah, sehingga terjadi kecacatan, sulit menelan, gangguan bicara dan artikulasi, serta deviasi dari sisa fragmen menuju sisi yang dioperasi. Saat membuka mulut, deviasi ini meningkat dan mengarah ke pembukaan dan penutupan secara angular. Perangkat korektif bernama guide flange prosthesis ditunjukkan untuk mengatasi manifestasi klinis tersebut. Tujuan laporan kasus ini adalah untuk mengkaji penggunaan mandibular guide flange prosthesis pada pasien pasca hemimandibulektomi dekstra, sebagai rehabilitasi fungsi pengunyahan, penelanan, fonetik dan estetika. Kesimpulan dari laporan kasus ini adalah protesa mandibula dengan guide flange dari bahan resin akrilik dapat merehabilitasi defek pada mandibula pasca hemimandibulektomi sehingga mengembalikan fungsi pengunyahan, fonetik, proses penelanan dan estetika.

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Latar Belakang. Resin komposit merupakan bahan pilihan untuk reparasi Gigi Tiruan Cekat porcelain fused to metal (PFM) Karena estetis baik dan manipulasi mudah. Tujuan penelitian ini adalah mengetahui perbedaan kekuatan geser perlekatan resin komposit pada permukaan logam Gigi Tiruan Cekat dengan menggunakan resin komposit jenis packable dan jenis flowable. Metode penelitian. Subjek penelitian berupa logam NiCr (Noritake, Japan) berbentuk silinder dengan diameter 10 mm dan tinggi 3 mm. Penelitian dibagi menjadi dua kelompok, masing-masing terdiri dari 10 subjek. Kelompok pertama reparasi dengan resin komposit packable (Z250™ 3M ESPE, USA) dan kelompok kedua reparasi dengan resin komposit flowable (Dyad flow, Kerr, USA). Permukaan subjek dikasari dengan wheel diamond bur, dietsa dengan asam fosfat 37 % (Scotchbond™, 3M ESPE, USA) kemudian dicuci dan dikeringkan, selanjutnya diaplikasikan silan (Rely X™ Ceramic Primer, 3M ESPE, USA) dan bonding (Adper™ Single Bond, 3M ESPE, USA). Permukaan kemudian dilapisi dengan resin komposit packable dan flowable, disinari selama 40 detik. Subjek penelitian direndam di dalam distilled water dan dimasukkan ke dalam incubator dengan suhu 37°C selama 7 hari. Uji kekuatan geser dilakukan dengan menggunakan Universal Testing Machine. Data dianalisis dengan uji t. hasil uji t menunjukkan terdapat perbedaan bermakna kekuatan geser reparasi gigi tiruan cekat pada permukaan logam (p<0,05). Kesimpulan penelitian ini adalah kekuatan geser reparasi pada permukaan logam dengan menggunakan resin komposit flowable yang mengandung bahan coupling agent lebih tinggi dibandingkan reparasi pada permukaan porselen dengan menggunakan resin komposit packable. Background. One of selected material by repairing the fixed partial denture was composite resin because of its good aesthetics and low manipulation. The aim. This research was aimed at identifying the differences of shear bond strength of composite resin on metal surface by using different composite resins, namely packable and flowable composite resins. Method. The research subjects were cylinders with 10 mm in diameter and 3 mm in height. The research subjects with metal material of NiCr (Noritke, Japan) involved two groups. The first group comprising 10 repair subjects with composite packable (Z250™, 3M ESPE, USA) and 10 repair subjects with flowable composite (Dyad flow, Kerr, USA). The surface of the subjects were roughned with wheel diamond bur and etched with 37% phosphate acid (Scotbond™, 3M ESPE, USA) were applied. The surface was then coated with packable and flowable composite resins and light-cured for 40 seconds. The research subjects were immersed in distilled water and put into the incubator at temperature of 37°C for 7 days. The shear bond strength test was conducted using the Universal Testing Machine. Data were analyzed using t-test. The result. The research result showed that there were differences of shear bond strength of repair between packable and flowable composite resins. The result of t-test indicated significant diffrences on metal surface (p<0,05). The conclusion of this research is that shear bond strength of repair with flowable composite which contain coupling agent has higher shear bond strength than that of packable composite resin.

Latar Belakang. Tindakan pembedahan pada pasien dengan kanker rongga mulut dapat mengakibatkan terjadinya defek di area intra oral dan maksillofasial. Defek tersebut dapat mengakibatkan terganggunya fungsi normal rongga mulut, yaitu mengunyah, bicara dan estetis, serta mengurangi rasa percaya diri. Untuk megatasinya diperlukan rehabilitasi fungsi rongga mulut berupa pembuatan obturator. Tujuan. Rehabilitasi defek pasca bedah pada pasien karsinoma sel skuamosa yang melibatkan palatum keras, sebagian palatum lunak, rongga hidung dan sinus maksilaris. Laporan Kasus dan Penatalaksanaan. Seorang pasien laki-laki, usia 74 tahun, datang ke klinik prostodonsia RSGM UGM, atas rujukan dari RSUP Dr Sardjito Yogyakarta, untuk dibuatkan hidung dan penutup untuk langit-langit mulutnya yang terbuka. Pasien merasa malu karena kondisi hidungnya yang hilang dan terbuka, serta susah untuk menelan makanan dan jika berbicara kurang jelas karena langit-langit mulutnya juga hilang/terbuka. Pasien telah menjalani operasi pembedahan hidung dan palatum, karena terdiagnosa karsinoma sel skuamosa. Pemeriksaan obyektif menunjukkan terdapat defek yang cukuo besar pada rongga hidung dan palatum durum dan sebagian palatum molle. Gigi yang tersisa pada rahang atas hanya gigi 23. Perawatan yang dilakukan adalah dengan pembuatan protesa hidung dan obturator. Obturator dibuat dari bahan resin akrilik dengan klamer C pada gigi 23. Untk menambah kekuatan retensi maka ditambahkan magnet di fitting surface obturator yang dilekatkan dengan protesa hidung. Kontrol dilakukan 1 bulan kemudian. Pasien merasa nyaman menggunakan obturator dengan penguat magnet pada protesa hidung. Pasien bisa menelan makanan dan bicaranyapun sudah lebih jelas. Pasien juga merasa obturatornya tidak mudah lepas, ketika menelan makanan maupun saat berbicara. Kesimpulan. Penggunaan obturator dengan magnet dapat mengembalikan fungsi normal rongga mulut akibat defek pasca bedah, serta mengembalikan rasa percaya diri pasien. Background. Surgery in patients with cancer of the oral cavity can result in defects in the area of intra-oral and maxillofacial. Defects can lead to discruption of the normal functions of the oral cavity, ie chewing, talking and aesthetic, as well as reducing confidence. In order to fix the function, the patient needed rehabilitation of oral function such as the manufacture of the obturator. Objective. Postoperative rehabilitation defects in patients with squamous cell carcinoma involving the hard palate, part soft palate, nasal cavity and the maxillary sinus. Case Report and Management. A male patient, aged 74, came to the clinic of prosthodontics Gadjah Mada University Dental Hospital, upon referral from the Dr. Sardjito Hospital Yogyakarta. He wanted to make the nose and the cover for his open mouth roof. He feels embarrassed because of the condition of his nose was missing and open, as well as difficult to swallow food and if he talk was less obvious because of the condition of his nose was missing and open, as well as difficult to swallow food and if he talk was less obvious because the roof of his mouth is also missing/open. He had undergone nose and palate surgery, as diagnosed squamous cell carcinoma. The objective examination shows that there substantial defects in the nasal cavity and hard palate and part of the soft palate. The remaining teeth in the upper jaw only element 23. The treatment that performed in this patient was making the nose and obturator prosthesis. Obturator is made of acrylic resin with C clamer on teeth 23. In order to add strength retention, there was addition of magnet on the obturator fitting surface that attached to the nose prosthesis. The control performed one month later. Patient feels comfortable using the obturator prosthesis with magnetic on nose prosthesis. He can already swallow food again and the talk has been clearer. He also feels comfort since the obturator was not easily escape, while swallowing food or speaking. Conclusion. The use of the obturator with magnets can restore the normal function of the oral cavity caused by post-surgical defect and restore the confidence of the patient.

The thermoplastic nylon denture base material is prone to discoloration because its amide bonds absorb water easily. Titanium dioxide (TiO2) nanoparticle have long been used as a denture base coating. Meanwhile, coffee contains chlorogenic and tanic acid, which can change the color of denture bases. The purpose of this study was to examine the effect TiO2 coating and duration of coffee immersion on discoloration of thermoplastic nylon denture base. Samples consisted of 24 thermoplastic nylon in square-shaped (30 x 30 x 2 mm), divided into 4 groups (n = 6). They were control (without TiO2 coating) and treatment (with TiO2 coating) groups, which then were immersed in coffee solution for 15 and 30 days. Discoloration test was conducted using spectrophotometer by measuring the delta absorbance of light before and after coffee immersion. The result showed that the lowest delta absorbance was in the 15-day treatment group (0.011 ± 0.005) and the highest was in the 30-day control group (0.077 ± 0.027). Two-way ANOVA test showed that TiO2 coating and coffee immersion had an effect on discoloration of thermoplastic nylon (p <0.05). Post hoc LSD test showed that there were significant differences between the control and treatment group at 15 and 30 days of coffee immersion (p <0.05). In conclusion, TiO2 as a thermoplastic nylon denture base coating can reduce discoloration by coffee immersion for 15 and 30 days. There were no differences between 15 and 30 days of coffee immersion on thermoplastic nylon’s discoloration in the control and treatment groups.