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All Journal Journal of Indonesian Dental Association Interdental Jurnal Kedokteran Gigi (IJKG)
Suci, Aldrina Wulan Eka
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Biochemistry, Genetics & Molecular Biology Dentistry Medicine & Pharmacology Public Health

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Fracture Toughness of Monolithic Zirconia and Lithium Disilicate CAD/CAM Endocrown Suci, Aldrina Wulan Eka; Ratnasari, Dina; Dwisaptarini, Ade Prijanti; Elline, Elline
Journal of Indonesian Dental Association Vol 6 No 2 (2023): October
Publisher : Indonesian Dental Association

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Abstract

Introduction: Endocrown is an indirect restoration following the endodontic treatment made of ceramic material as a substitute for post core crown. The endocrown is cemented to the inner wall of the pulp chamber and to the cavity margins to increase the macromechanical retention. Material commonly used are monolithic zirconia and lithium disilicate; both can be obtained using the CAD/CAM technique. Good endocrown restoration must be able to handle the chewing workload especially on the posterior tooth. Objective: To determine the difference in fracture toughness of monolithic zirconia and lithium disilicate CAD/CAM endocrown. Methods: This study used 6 endocrown CAD/CAM samples, attached to typodont prototype in 3D resin printing model produced by the printing machine. Samples were divided into 2 groups. Group A were monolithic zirconia endocrowns and group B were lithium disilicate endocrowns. The fracture toughness was calculated using the Universal Testing Machine (UTM). Results: Fracture toughness of the monolithic zirconia endocrown were 2.747 N and lithium disilicate were 769 N. The unpaired t test showed that there was significant difference in fracture toughness between groups (p < 0,05). Conclusion: Monolithic zirconia endocrown has a higher fracture toughness compared to the lithium disilicate endocrown, but lithium disilicate is more recommended as an endocrown restoration material because its fracture toughness is closer to masticatory load of posterior teeth.
Rigor Mortis and Its Management in Dental Autopsy Procedures Tanjung, Rizki; Farizka, Intan; Kirana, Siti Salsabila; Yuwono, Agnes Elizabeth; Putridwita, Ailsa Fadhilah; Suci, Aldrina Wulan Eka; Christy, Elsa
Interdental Jurnal Kedokteran Gigi (IJKG) Vol. 22 No. 1 (2026): Interdental Jurnal Kedokteran Gigi (IJKG)
Publisher : Fakultas Kedokteran Gigi, Universitas Mahasaraswati Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46862/interdental.v22i1.12851

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Introduction: Forensic Odontology plays a crucial role in forensic investigations, including determining the postmortem interval (PMI). Rigor mortis is one of the early signs of death, often presenting challenges during oral examinations. Dental autopsy is a procedure that can address these challenges, enabling a thorough examination of the teeth even in the presence of rigor mortis. Review: Rigor mortis represents a major obstacle in dental autopsy procedures. Muscle stiffness hampers mouth opening and access to the oral cavity. Various techniques can be employed to perform dental autopsies in cases of rigor mortis, such as the use of mouth gags, trismus screws, and myotomy. Jaw resection techniques may also be employed to provide better access to dental structures. Conclusion: Rigor mortis significantly limits oral cavity access during dental autopsy procedures. Characterized by muscle stiffness, presenting a challenge during dental autopsy examination of the oral cavity.
Co-Authors Christy, Elsa Dwisaptarini, Ade Prijanti Elline, Elline Intan Farizka Kirana, Siti Salsabila Putridwita, Ailsa Fadhilah Ratnasari, Dina Rizki Tanjung Yuwono, Agnes Elizabeth