Evaluation of Masticatory Muscle Function Using Digital versus Traditional Techniques for Mockup Fabrication: A Controlled Prospective Study

Simona Tecco,Giorgio Gastaldi,Floriana Bosco,Francesca Cattoni,Alessandro Nota,Enrico Felice Gherlone,Atanaz Darvizeh,Vincenzo Sanci

doi:10.3390/app10176013

Simona Tecco, Giorgio Gastaldi + Show 6 more

Open Access

https://doi.org/10.3390/app10176013

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Journal: Applied Sciences	Publication Date: Aug 31, 2020
Citations: 10	License type: CC BY 4.0

Affiliation: Vita-Salute San Raffaele University

Abstract

Background: the aim of this longitudinal prospective study was to analyze the effect of digital and traditional mockup on masticatory muscle activity in patients with teeth wear, rehabilitated with an increase of occlusal vertical dimension. Subjects and Methods: a sample of 22 adult patients who were about to receive a prosthetic rehabilitation was divided into a study group (3M; 9F; mean age 42 ± 0.8 years), treated using the digital mockup; and a control group (2M; 8F; mean age 37 ± 0.5 years), treated using the conventional technique (traditional) mockup. Electromyographic activity of anterior temporalis and masseter muscles were evaluated before the beginning of the treatment (T0), at mockup insertion (T1), after treatment (T2) and each lapse of time lasted 2–5 months. Results: the comparison between the two groups at different time gaps revealed that at ∆1 (T1–T0) only the impact index (IMP) showed significant difference and no other significant variation was observed between the two groups at ∆2 (T2–T1) and ∆3 (T2–T0). It concludes that traditional and digital methods generally have nonsignificant differences. Conclusions: both methods seem to be effective in prosthetic rehabilitation and give comparable effects on masticatory muscles.

Highlights

Prosthetic rehabilitation for the treatment of tooth wear has become increasingly diffused over the last two decades [1], since new approaches have emerged to reconstruct worn teeth in a minimally invasive way [2,3]
In the whole sample it registered an increase of occlusal vertical dimension (OVD) of about 1.5–3.5 mm
This controlled prospective study compares the impact on masticatory muscle activity between two different techniques, while OVD was increased utilizing digital and traditional mockups

Summary

Introduction

Prosthetic rehabilitation for the treatment of tooth wear has become increasingly diffused over the last two decades [1], since new approaches have emerged to reconstruct worn teeth in a minimally invasive way [2,3]. The new procedures include a wax and a mockup that are primarily used to design and previsualize both aesthetic and functional outcomes. The mockup is often limited to the treatment of anterior areas, mainly to test aesthetics and phonetics [1]. In cases of extensive rehabilitation, it is used on posterior teeth, to manage a reversible and effective procedure, and evaluate and test functional aspects [2,4]. Mockup is an important step to achieve a new occlusal vertical dimension (OVD), and a guide for the preparation of anterior and posterior teeth. It represents a mandatory step in the entire procedure

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