Haslinda Z. Tamin
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The role of intraoral abrasion pressure with alumunium oxide on the bond strength of resin cement in adhesive bridge restorations Uliani, Hanna Mentari; Putri Welda Utami Ritonga; Haslinda Z. Tamin
Indonesian Journal of Prosthodontic Vol 5 No 1 (2024): June 2024
Publisher : Indonesia Prosthodontic Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46934/ijp.v5i1.199

Abstract

Background: Adhesive bridge is a fixed denture with minimal abutment preparation attached with resin cement. Exposure of the dentin during preparation in the posterior region causes frequent detachment of the adhesive bridge. This is due to the presence of fluid and changes in the smear layer on the dentinal tubules, to increase bond strength, the intraoral abrasion method was developed. Intraoral abrasion is a mechanical technique using air and water sprays to produce tooth surface roughness while increasing bond strength without damaging the tooth structure. Objective: One of the intraoral abrasion materials used is aluminum oxide (Al2O3). One of the operating parameters of intraoral abrasion that can affect bond strength between resin cement and the tooth surface is pressure. Optimal intraoral abrasion pressure with Al2O3 and the right type of resin cement aims to create tooth surface roughness while increasing the bond strength of resin cement in adhesive bridge restorations. Conclusions: The success of adhesive bridges, especially in the posterior area, cannot be separated from the role of optimum intraoral abrasion pressure on the tooth surface. The correct use of intraoral abrasion pressure can increase the bond strength of resin cement on the tooth surface while reducing tooth structure damage. Keywords: adhesive bridge, adhesive resin cement, intraoral abrasion, alumunium oxide, water airborne abrasion.
Improved retention of ocular prosthesis with modified shallow socket impression technique sinulingga, Andri; Putri Welda Utami Ritonga; Haslinda Z. Tamin
Indonesian Journal of Prosthodontic Vol 5 No 2 (2024): December 2024
Publisher : Indonesia Prosthodontic Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46934/ijp.v4i1.162

Abstract

ABSTRACT Background: The long-term use of a custom ocular prosthesis that is not replaced could cause a shallow socket. These changes affect the size of the socket. In fact, the custom ocular prosthesis becomes loose. Objectives: Modify the impression by duplicating the old custom ocular prosthesis as a special tray for obtaining an accurate impression of the socket and reducing clinical visits. Case Report:. A 42-year-old woman came to Dental Hospital Universitas Sumatera Utara with the chief complaint that the custom ocular prosthesis was easy to fall off and painful during movement. She has worn the ocular prosthesis for over 30 years, fabricating it five times. However, the last ocular prosthesis lasted for 10 years. The definitive impression was prepared by duplicating the custom ocular prosthesis, and this special tray was modified by adding a rod with a light body material due to its low viscosity. As a result of using the special tray, a more accurate impression can be made due to the small size of the rod. Conclusion: The impression technique with a modified tray from the duplicated old custom ocular prosthesis can record the eye socket in detail and produces a retentive custom ocular prosthesis.
Accuracy of intraoral scanner on subgingival finish line with gingival retraction Damanik, Nabilah F.; Haslinda Z. Tamin; Putri WU. Ritonga
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.v6i1.289

Abstract

Background: The development of intraoral scanner (IOS) technology has brought about a significant transformation in dentistry, enabling more efficient and accurate digital workflows. Studies show that IOS provides clinically acceptable accuracy similar to conventional methods, especially for fixed prothesis. However, there are special challenges when impression subgingival finish line accurately. The use of gingival retraction methods is essential for easy access to these margins. Objectives: This literature review aims to describe the accuracy of IOS in impression subgingival finish line with the aid of gingival retraction, and compare the effectiveness of mechanical and chemical retraction methods in digital impression of subgingival finish line. Mechanical methods, such as the use of retraction cord, provide stability to the sulcus but may cause discomfort and potential damage to the periodontium. Meanwhile, chemical methods using aluminum chloride-based pastes show good results in displacing gingival tissue with minimal side effects. Summary: Based on existing studies, the combined method of mechanical and chemical retraction provides the best results for impression accuracy in the subgingival area, taking into account patient comfort and quality of the final result. Thus, choosing the right retraction method can improve clinical outcomes and ensure the long-term success of digital- based prosthodontic restorations. Keywords: Subgingival finish line; gingival retraction; trueness; precision; intraoral scanner.
Accuracy of digital impression scanning strategies for free-end edentulous Athirah, Annisa; Haslinda Z. Tamin; Ricca Chairunnisa
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.v6i1.295

Abstract

Background: Scanning using intraoral scanners (IOS) offers better accuracy and time efficiency compared to conventional impression methods, especially in overcoming the challenges of free end edentulous cases. The quality of IOS scans is measured by accuracy, which is influenced by scan strategy. Scan strategies include scanning paths, sequences, and combinations. Study conducted that the right scan strategy can affect accuracy as assessed by trueness and precision. However, there is no manufacturer's standard and only a few study on scan strategies in edentulous free end cases. Objectives: This literature review aims to describe scan strategy in improving digital impression accuracy in free end edentulous case. Summary: A zig zag scanning path will help the IOS to capture the tooth morphology better and a linear scanning path will result in smaller deviations. Scanning sequences from the teeth to ridge will reduce the jigsaw effect at the fulcrum point, resulting in a more stable framework during removable denture fabrication. Keywords: Scan strategy; IOS; free end; trueness; precision
Role of laser power and focus diameter in increasing retention of metal porcelain fixed dentures with short clinical crowns Sutrisman, Andry; Putri Welda Utami Ritonga; Haslinda Z. Tamin
Indonesian Journal of Prosthodontic Vol 5 No 1 (2024): June 2024
Publisher : Indonesia Prosthodontic Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46934/ijp.v5i1.263

Abstract

ABSTRACTBackground: In teeth with short clinical crowns that will be used as a support for metal porcelain fixed dentures, the problem that often occurs is that the dentures easily fall off after being installed. Surface treatment is one of the efforts to increase retention. Advances in laser technology provide advantages in increasing microstructural and wear resistance on the metal surface of the crown that will be used as abutment teeth.Objectives: In addressing the retention problem of short clinical crowns, modification of tooth preparation, casting, and proper cementation procedures need to be considered. Improving the mechanical properties by surface treatment of the dental crown to be cemented by modifying the strength and focus of the laser diameter can play a role in surface roughness and shear bond strength.Conclusion: The use of lasers to increase microstructural and wear resistance in teeth with short clinical crowns can minimize the failure of making metal porcelain fixed dentures. Keywords: fixed denture, short clinical crown, surface roughness, shear bond strength, laser