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Occlusal adjustment of 3-unit tooth-supported fixed dental prostheses fabricated with complete-digital and -analog workflows: A crossover clinical trial.
Karasan, Duygu; Sailer, Irena; Lee, Hyeonjong; Demir, Fatmanur; Zarauz, Cristina; Akca, Kivanc.
Afiliação
  • Karasan D; Division of Fixed Prosthodontics and Biomaterials, University Clinics for Dental Medicine, University of Geneva, Geneva, Switzerland. Electronic address: duygu.narin-karasan@unige.ch.
  • Sailer I; Division of Fixed Prosthodontics and Biomaterials, University Clinics for Dental Medicine, University of Geneva, Geneva, Switzerland.
  • Lee H; Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, South Korea.
  • Demir F; Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
  • Zarauz C; Division of Fixed Prosthodontics and Biomaterials, University Clinics for Dental Medicine, University of Geneva, Geneva, Switzerland.
  • Akca K; Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
J Dent ; 128: 104365, 2023 01.
Article em En | MEDLINE | ID: mdl-36403691
ABSTRACT

AIM:

This prospective crossover clinical trial aimed to compare the complete-digital and -analog workflows in terms of occlusal adjustment of 3-unit tooth-supported fixed dental prostheses, operator, and patient preferences. MATERIALS AND

METHOD:

This study included twelve patients receiving fourteen 3-unit posterior FDPs. 2 FDPs were made for each restoration site one fabricated in complete-digital workflow comprising intraoral scan with static bite registration (Trios 3) and a monolithic zirconia FDP (test); the other fabricated in complete-analog workflow comprising conventional impression/face-bow transfer and a porcelain-fused-to-metal FDP (control). The FDPs (n=28) were intraorally/provisionally fixed, and quadrant-like intraoral scans were taken for every FDP before & after their occlusal adjustments. Pre- and post-adjustment scans of each FDP were then superimposed using best-fit alignment (GOM Inspect) to measure the volumetric occlusal adjustment amount (mm3) (3Matic) (Mann Whitney U, α=0.05). The patient and operator experience for digital and analog workflows were evaluated using visual analog scales (Wilcoxon test, α=0.05).

RESULTS:

Mean occlusal adjustments were 7.63 mm3 [±7.02] and 25.95 mm3 [±39.61] for test and control groups, respectively. The volumetric adjustment difference was clinically noticeable but not significant (P=0.12). The impression and digital workflow adjustment were perceived more favorably by both operator (P=0.003, P=0.046, respectively) and the patients (P=0.003, P=0.002, respectively).

CONCLUSIONS:

Within the limitations of this clinical study, the complete digital workflow with digital static bite-registration provided high occlusal accuracy for short-span tooth-supported FDPs. In addition, the patient and operator preferences significantly favored the digital workflow. CLINICAL

SIGNIFICANCE:

Complete-digital workflow employing intraoral scanning and model-free fabrication of monolithic-Zr short-span tooth-supported FDPs offers an effective treatment modality with sufficient occlusal accuracy. Therefore complete-digital workflow is a valid alternative for complete-analog workflow comprising conventional impression, face-bow transfer, and use of a semi-adjustable articulator.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Planejamento de Prótese Dentária / Ajuste Oclusal Tipo de estudo: Clinical_trials Limite: Humans Idioma: En Revista: J Dent Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Planejamento de Prótese Dentária / Ajuste Oclusal Tipo de estudo: Clinical_trials Limite: Humans Idioma: En Revista: J Dent Ano de publicação: 2023 Tipo de documento: Article