The effect of different fit-indicating materials and preparation designs on the marginal and internal fit of 3D-printed permanent endocrowns

Year 2025, Volume: 26 Issue: 1, 108 - 116, 20.03.2025

İzim Türker Kader , Safa Özer , Burçin Arıcan

https://doi.org/10.69601/meandrosmdj.1596545

Abstract

Objective: The purpose of this study was to evaluate the effect of different fit-indicating materials and preparation designs on the marginal and internal fit of 3D-printed permanent endocrowns.
Materials and Methods: Maxillary right first molar typodont teeth were prepared according to different preparation designs and divided into two groups (n=80): Group 1-butt joint margin design and a 4 mm pulp chamber depth and Group 2-shoulder margin design and a 4 mm pulp chamber depth. The groups were scanned using a digital intraoral scanner. The 3D-printed single master dies and permanent endocrowns were fabricated. The groups were divided into two subgroups, such as endocrowns seated with Fit Checker and light-body fit-indicating materials. The two scans of the master die were superimposed using 3D analysis software. Multipoint measurements were performed on standard points in each group. The marginal, internal, pulp chamber and overall gap values were determined according to the means of the measurement points and compared between the groups. The statistical analysis was performed using a Two-Way ANOVA test. (p=0,05).
Results: The Fit checker showed better marginal and internal fit than the light body (p<0,001). Light-body usage in butt-joint design showed the highest marginal gap values, while Fit Checker usage in shoulder design showed the lowest internal gap values (p<0,001).
Conclusion: Using different fit-indicating materials and preparation designs affects the fit of endocrowns. Fit Checker material will improve the internal fit of 3D-printed endocrown restoration with a preparation design of shoulder margin and marginal fit of endocrown with butt-joint margin design.

Keywords

Printing, Three-Dimensional, Dental Restoration, Permanent, Fit-Checker, Dental Marginal Adaptation

Ethical Statement

This study was conducted entirely in vitro, and no human participants, animal subjects, or other living organisms were involved. As a result, ethical approval was not required in accordance with the regulations of our institution and the principles outlined in the Declaration of Helsinki.

Farklı fit-indikatör materyalleri ve preparasyon dizaynlarının 3B-baskı yöntemiyle üretilmiş daimi endokronların marjinal ve internal adaptasyonuna etkisi

Abstract

Amaç: Bu çalışmanın amacı farklı fit-indikatör materyalleri ve preparasyon dizaynlarının 3B-baskı yöntemiyle üretilmiş daimi endokronların marjinal ve internal adaptasyonuna etkisini değerlendirmektir.
Gereç ve Yöntemler: Üst sağ birinci molar tipodont dişleri farklı preparasyon dizaynlarına göre hazırlandı ve iki gruba ayrıldı (n=80): Grup 1-butt-joint marjin dizaynı ve 4 mm pulpa odası derinliği ve Grup 2-shoulder marjin dizaynı ve 4 mm pulpa odası derinliği. Gruplar dijital intraoral tarayıcı kullanılarak tarandı. 3B-baskı yöntemiyle elde edilen güdük modeller ve daimi endokronlar üretildi. Endokron gruplaro Fit Checker ve light-body fit-indikatör materyalleri kullanılarak güdük modellerin üzerine yerleştirilecek şekilde iki alt gruba ayrıldı. Preparasyonun iki taraması 3 boyutlu analiz yazılımı kullanılarak çakıştırıldı. Her grupta standart noktalarda çok noktalı ölçümler gerçekleştirildi. Ölçüm noktalarının ortalamalarına göre marjinal, internal, pulpa odası ve ortalama boşluk değerleri belirlendi ve gruplar arasında karşılaştırıldı. İstatistiksel analiz Two-Way ANOVA testi kullanılarak yapıldı. (p=0,05).
Bulgular: Fit Checker, light-body materyaline kıyasla daha iyi marjinal ve internal adaptasyon gösterdi (p<0,001). Butt-joint marjin dizaynında light-body kullanımı en yüksek marjinal boşluk değerlerini gösterirken, shoulder dizaynda Fit Checker kullanımı en düşük internal boşluk değerlerini gösterdi (p<0,001).
Sonuç: Farklı fit-indikatör materyalleri ve preparasyon dizaynlarının kullanılması endokronların adaptasyonunu etkiler. Fit Checker materyali shoulder marjin dizaynı ile hazırlanmış 3B baskı ile üretilen daimi endokronların internal adaptasyonunu, butt-joint marjin dizaynına sahip endokronların marjinal adaptasyonunu iyileştirecektir.

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