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All Journal Dentika Dental Journal MDJ (Makassar Dental Journal) Indonesian Journal of Prosthodontics
Syafrinani
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Dentistry

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Printing parameters of layer thickness in 3D printing digital light processing on absolute marginal discrepancy and marginal gap in hybrid ceramic-resin crown Donny Tannu; Syafrinani; Ariyani
Indonesian Journal of Prosthodontic Vol 6 No 1 (2025): June 2025
Publisher : Indonesia Prosthodontic Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46934/ijp.v6i1.293

Abstract

ABSTRACT Marginal adaptation in the form of absolute marginal discrepancy and marginal gap is one of the parameters for long-term clinical success in single crown restorations. The use of 3D printing digital light processing (DLP) additive manufacturing technology can produce accurate and efficient restorations. However, one of the printing parameter, layer thickness, can affect the accuracy of marginal adaptation. This review aims to evaluate the effect of layer thickness variation on absolute marginal discrepancy and marginal gap in definitive hybrid ceramic-resin crown manufactured using 3D DLP printing technology. Results show that a layer thickness parameter of 50 µm is preferred for good fitting accuracy and small cumulative deviation. Smaller layer thickness will increase the number of layers, and manufacturing time but on the other hand will reduce accuracy. Optimalization of the layer thickness is required to obtain the best marginal adaptation of a single crown. Keywords: Absolute marginal discrepancy; Marginal gap; layer thickness; 3D printing DLP; Hybrid ceramic-resin
Integration of leaf gauge technique in the digital fabrication of stabilization splint for temporomandibular disorder: A case report Justin, Alexander; Syafrinani; Ricca Chairunnisa
Indonesian Journal of Prosthodontic Vol 6 No 2 (2025): December 2025
Publisher : Indonesia Prosthodontic Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46934/ijp.v6i2.316

Abstract

AbstractBackground: Temporomandibular disorder (TMD) is a multifactorial musculoskeletal condition characterized by jaw pain, limited mandibular movement, and joint sounds. A common subtype is disc displacement with reduction (DDWR), often accompanied by local myalgia and arthralgia. Stabilization splints are a standard treatment modality, with 3D printing offering benefits such as precision, efficiency, and reduced clinical time. However, the effectiveness of splint therapy depends on accurate recording of the mandibular-maxillary relationship, which can be reliably achieved using a leaf gauge.Objective: To report the management of a TMD case involving DDWR, myalgia, and arthralgia in an adolescent patient using a leaf gauge to establish centric relation during the fabrication of a 3D-printed stabilization splint.Case Report: An 18-year-old male presented with right-sided jaw pain and clicking upon mouth closure. History revealed parafunctional habits, including unilateral mastication and academic stress. Diagnosis was confirmed via DC/TMD Axis I and II, along with clinical and radiographic assessment, indicating DDWR with myalgia and arthralgia. Treatment includes behavioral treatment, infrared light therapy, and fabrication of a stabilization splint. Centric relation was determined using a leaf gauge to ensure accurate mandibular positioning.Conclusion: The use of a leaf gauge in this case facilitated precise centric relation, enhancing the efficacy of the 3D-printed stabilization splint. This approach contributed to significant symptom improvement and underscores the value of integrating analog tools within digital workflows in TMD management.Keywords: disc displacement with reduction, leaf gauge, 3D printing, local myalgia, arthralgia
Stress distribution and flexural strength analysis of anterior ceramic fixed prostheses based on connector designs using finite element analysis Uly, Rismayasari; Syafrinani; Ariyani
Indonesian Journal of Prosthodontic Vol 6 No 2 (2025): December 2025
Publisher : Indonesia Prosthodontic Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46934/ijp.v6i2.321

Abstract

Background: Anterior ceramic fixed prostheses, such as bridges and resin-bonded fixed partial dentures (RBFPDs), often use zirconia or lithium disilicate. Their success depends on optimal flexural strength and favorable stress distribution to abutment teeth, both influenced by connector design. Objective: This systematic review evaluates the influence of connector design on stress distribution and flexural strength of anterior zirconia and lithium disilicate prostheses using Finite Element Analysis (FEA) or in vitro testing. Methods: Following PRISMA guidelines, studies published between 2015 and 2025 were searched in PubMed, Scopus, and Google Scholar. Eligible full-text English articles examined anterior fixed prostheses made of zirconia or lithium disilicate through FEA or in vitro testing. Results: Seven studies met the criteria. Round connectors in both materials showed the highest flexural strength under oblique loading, while triangular zirconia connectors performed best under vertical loading. Zirconia exhibited uniform stress distribution, whereas lithium disilicate showed balanced stress. Rectangular lithium disilicate connectors displayed more even stress distribution than trapezoidal designs. Double-ended RBFPDs had lower stress than single-ended designs. Conclusion: Connector design and ceramic material critically influence stress distribution and flexural strength in anterior fixed prostheses. Keywords: stress distribution, flexural strength, anterior fixed prostheses, connector design, zirconia, lithium disilicate, FEA
Co-Authors Aidilla, Dara Ariyani Corentus Leo, Andri Donny Tannu Justin, Alexander Leo, Andri C. Paulina, Tiroi Putri WU. Ritonga Razalie, Ludwika Patricia Ricca Chairunnisa Ricca Chairunnisa, Ricca Ritonga, Putri Welda Utami Rusdy, Hendry Sutrisman, Andry Uliani, Hanna Mentari Uly, Rismayasari Wijaya, Olivian