Evaluation of Impression Accuracy: Digital Scanner Versus Analog Technique

University of Milan51 enrolled

Overview

The goal of this study is to evaluate the accuracy of intraoral impressions obtained using the Trios 3Shape® and Carestream CS 3600™ scanners, as well as traditional analog impressions using polyvinyl siloxane (PVS), in comparison to a gold standard represented by a laboratory scanner in 51 dental models from 42 patients affected by partial edentulism who required at least two implants. Researchers compare Trios 3Shape®, Carestream CS 3600™ and polyvinyl siloxane (PVS) to see if there is a different accuracy.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Accuracy and Precision of Noninvasive Measurement

Interventions

impressionOTHER

A Comparative Study of Digital Versus Analog Impressions

Digital impressionOTHER

impression taken by intraoral scanner

Eligibility

Sex: ALLMin age: 18 YearsMax age: 80 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Age between 18 and 80 years; * Implant placement in healed bone sites (at least 8 weeks post-tooth extraction or at least 6 months after regenerative procedures), allowing guided implant insertion of at least 3.3 mm in diameter or 8.5 mm in length; * Implant site without ongoing infections or dental extraction residues; * Good systemic health conditions and adequate oral hygiene; * Periapical and periodontal health of opposing teeth/implants in occlusion; * Edentulism of at least two adjacent dental elements. Exclusion Criteria: * Ongoing diseases requiring prolonged use of corticosteroids; * Leukocyte dysfunction or deficiencies; * Severe hemophilia; * Current pregnancy; * Past and/or current head/neck radiotherapy and/or chemotherapy; * Renal insufficiency; * Past and/or current use of bisphosphonates; * Uncompensated endocrine disorders; * Physical disabilities preventing adequate oral hygiene; * Alcohol abuse and drug use; * Smokers (\>10 cigarettes/day); * Untreated periodontitis; * Mucosal diseases (e.g., erosive Lichen Planus); * Severe parafunctional habits (e.g., bruxism or clenching); * Persistent intraoral infections; * Allergies or adverse reactions to restorative materials; * Completely edentulous arches; * Limited mouth opening; * Inadequate oral hygiene or lack of motivation for self-care; * Uncontrolled systemic diseases; * Untreated or chronic oral cavity diseases; * Fully edentulous arches.

Locations (1)

Clinica Odontoiatrica Giorgio Vogel (Università degli studi di Milano)

Milan, Italy, Italy

Outcomes

Primary Outcomes

Clinical and radiological evaluation of soft tissues and bone level in implant supported rehabilitations performed with Flapless Computer-Guided implantology. A prospective clinical study.

The statistical analyses were performed using AnalystSoft StatPlus®. Using GOM Inspect by Zeiss®, the mean deviation values from the reference file were calculated for each model. They were expressed in absolute terms. In our study, for each of the three test techniques (TRIOS®-3Shape, CS 3600® Carestream Dental, and PVS), the average of the values obtained from the superimpositions of 51 models was calculated, resulting in the mean deviation of each method from the reference. For data analysis, a one-way ANOVA test and a two-sample Z-test were applied, with a significance level (α) set at 0.05. These tests were used both to compare the mean distances and to assess the standard deviations of the deviations. Each technique was considered accurate if its mean deviation was less than 30 μm.

Time frame: Patients included in this prospective study were recruited from 2017 to 2022

Data from ClinicalTrials.gov

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