Objective: The purpose of this study was to investigate the effect of the incorporation of chitosan nanoparticles into epoxy resin-based sealer on its setting time, flowability and solubility.  Methods: This study was divided into three evaluations: setting time, flowability, and solubility of sealers. Each study used 20 samples, which were divided into two groups. Group 1, epoxy resin-based sealers, and group 2, epoxy resin-based sealers mixed with chitosan nanoparticles. The Gilmore needle was used to observe the setting time, a simple press method based on ISO 6876 was employed to evaluate the flowability of the sealer, and the solubility test, which was according to ISO 6876 standard, was used to determine the solubility of sealers. The surface structure of the sealers before and after the solubility test was observed under Scanning Electron Microscopy (SEM). The data obtained from each study were analyzed by an unpaired t-test with a degree of significance of 95%. Results: The results showed that the setting time of epoxy resin and epoxy resin incorporated with chitosan were 567±30.20 and 572.5±27.91 min, flowability was 25.06±0.89 and 23.18±1.06 mm, and solubility was 0.0051%±0.0016 and 0.0045%±0.0018, respectively. No significant difference occurred between epoxy resin-based sealer and epoxy resin-based sealer mixed with chitosan nanoparticles in setting time, flowability, and solubility of sealers (*P>0.05).  Conclusion: The incorporation of chitosan nanoparticles produced a similar effect in setting time, flowability, and solubility as the epoxy resin-based sealer. Thus, epoxy resin-based sealer mixed with chitosan nanoparticles had acceptable properties in setting time, flowability, and solubility based on ISO 6876 standards.

ABSTRAKBanyak faktor yang menyebabkan kegagalan terapi endodontik antara lain pembersihan dan membentuk saluran akar yang tidak sempurna dan obturasi tidak hermetis sehingga menyebabkan kurangnya kemampuan untuk menghilangkan mikroorganisme yang ada. Saluran akar yang terinfeksi membutuhkan suatu medikamen untuk menunjang keberhasilan dalam perawatan saluran akar.Kalsium hidroksida merupakan salah satu bahan medikamen yang efektif karena memiliki sifat antibakteri dengan spektrum luas, pH tinggi, biokompatibilitas baik, mampu menetralkan endotoksin bakteri, memiliki sifat toksik yang paling rendah, serta menstimulasi pembentukan jaringan keras. Tujuan laporan kasus untuk menunjukan keberhasilan perawatan ulang saluran akar gigi insisivus lateralis kiri maksila dengan lesi periapikal menggunakan medikamen kalsium hidroksidachlorhexidine. Pasien wanita umur 53 tahun, gigi insisivus lateralis kiri maksila dengan lesi periapikal.Radiografi tampak obturasi kurang hermetis dan radiolusen daerah periapikal. Perawatan ulang saluran akar,diikuti pemasangan pasak fiber frefabricated dan restorasi porselin fuse metal.Keseimpulan setelah evaluasi setelah enam bulan pasca perawatan ulang saluran akar, radiografi menunjukan radiolusen mengecil dan gigi dapat berfungsi dengan normal. Maj Ked Gi. Juni 2013; 20(1): 52 -57.Kata Kunci: perawatan saluran akar ulang, kalsium hidroksida, chlorhexidine ABSTRACT: Re-Treatment of Root Canal of Maxillary Left Lateral Incisor with Calcium Hydroxide-Chlorhexidine Medicament.There are many factors that cause failure of endodontic therapy. For instances, incomplete cleaning and shaping of root canal and inadequate obturation that results in difficulty to remove the microorganisms. Infected root canal requires a medicament for the success of the root canal treatment. Calcium hydroxide is one of the effective ingredients as medicament because it has broad spectrum antibacterial properties, high pH, good biocompatibility, and it is able to neutralize bacterial endotoxins, decrease tissue toxicity, and stimulate the formation of hard tissue. The purpose of this case report is to show the success of root canal treatment of the left maxillary lateral incisor with periapical lesions using calcium hydroxide-chlorhexidine medicaments. The patient was a woman aged 53, complaining about her left maxillary lateral incisor with periapical lesion. Based on the radiographic evaluation, there was less hermetic obturation and a radiolucent in the periapical. Root canal re-treatment was continued with fiber prefabricated post and porcelain fused to metal crown. After six months of evaluation and endodontic retreatment, it is found that there is a decrease of radiolucency periapical lesion, and her teeth are able to function normally. Maj Ked Gi. Juni 2013; 20(1): 52 -57.

ABSTRAKPerawatan saluran akar satu kali kunjungan memberikan keuntungan antara lain memperkecil resiko kontaminasi mikroorganisme dan menghemat waktu perawatan. Pasak fiber reinforced composite memiliki ikatan yang baik dengan dentin menggunakan semen resin dan inti dari resin. Penggunaan pasak bisa mengurangi risiko fraktur. Tujuan penulisan laporan kasus ini adalah untuk mengevaluasi hasil restorasi gigi 11 nekrosis pulpa pasca perawatan saluran akar disertai restorasi dengan pasak fiber reinforced composite. Pasien wanita, 22 tahun datang ke Klinik Konservasi RSGM FKG UGM untuk merawat gigi depan atas kanan yang berlubang. Berdasarkan pemeriksaan subjektif, objektif dan radiografis diperoleh diagnosis gigi 11 nekrosis pulpa. pasca perawatan saluran akar gigi Gigi direstorasi dengan resin komposit dan pasak fiber reinforced composite. Kesimpula dari hasil evaluasi klinis saat kontrol tidak ada keluhan rasa sakit dan pasien merasa puas. Maj Ked Gi. Juni 2013; 20 (1) Gi. Juni 2013; 20(1): 45 -51.

Background: Tooth avulsion is described as a displacement of the tooth from its socket. Replantation on an avulsion permanent dentition is a condition that needs immediate treatment. Replantation of the avulsed tooth can be done in a span of less than 12 hr. Avulsion of tooth may occur due to trauma. Factors that determine healing after replantation are media storage, periodontal tissue damage, extra-alveolar period and intact alveolar socket. The main goal of the replantation is to maintain and treat the periodontal tissue and alveolar contour, and thus retain the dentition for esthetic condition. Objective: To find out the effectiveness of replantation for preserving avulsion of tooth. Case Report: A 42-year-old woman was referred to Universitas Gadjah Mada Dental Hospital with avulsed secondary mandibular incisor (32) after a motorcycle accident that had taken place the night before. The patient was traumatized for more than 12 hr. Based on the clinical examination, tooth 32 was avulsed. Radiographic examination showed no bone fracture. Root canal treatment was performed, and then replantation was carried out, followed by splinting using archbar. Three months after replantation, clinical and radiographic examinations were performed. Results: All mandibular incisors were in good condition. The patient showed good result, and even the replantation was done by exceeding the golden period time. The patient was instructed to maintain her oral hygiene. Conclusion: Immediate treatment of avulsion tooth and the right procedure can affect the success of the treatment. From this viewpoint, replantation is one of the appropriate treatments for preserving avulsion of tooth. Keywords: avulsed tooth, replantation, splinting

Introduction: Traumatized immature permanent teeth can cause pulp necrosis, leading to imperfect root formation, and thus resulting an open apex. The apical opening of the immature teeth is mostly large and thus may lead to difficulties in performing a root filling. In such cases, apexification is mandatory before doing root canal treatment. The aim of this case report was to inform that apexification and direct veneer was suitable to treat Ellis class IV fracture with necrotic pulpCase Report: 21-year-old female came to the Dental Conservation Clinic RSGM Prof. Soedomo Faculty of Dentistry UGM with chief complaint of right central incisive maxilla fracture and tooth discoloration. Radiographic examination showed an open apex of tooth 11 with a diffuse apical radiolucent area. Root canal treatment and apexification were carried out using circumferential technique and Mineral Trioxide Aggregate (MTA). Vertical warm obturation was performed, followed by intra coronal bleaching in the next visit. Final restoration was carried out using direct composite veneer. Post treatment radiographic showed a 1 mm diameter of radiolucent area at the apex in a good healing process.Conclusion: Apexification using MTA can be used to treat an open apex tooth. 1Student of Specialist Programme in Conservative Dentistry, Dentistry Faculty, Gadjah Mada University 2Department of Conservative Dentistry, Dentistry Faculty, Gadjah Mada University