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A Comparison of Conventional Versus Digital PAR (Peer Assessment Rating) Scores Using an Intraoral Scanner

NCT03405961 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 70

Last updated 2019-03-01

No results posted yet for this study

Summary

In dentistry, Peer Assessment Rating (PAR) is an objective way of quantifying how maligned a patient's teeth are by scoring orthodontic study models. It can also be used to assess treatment outcome by comparing pre- and post-treatment scores. Traditionally, PAR scoring is performed manually on plaster casts by a trained and calibrated individual. The plaster casts consume considerable amounts of storage space and the process of manual scoring can be time consuming and expensive. The recent decades have seen a rise in popularity of intra oral scanners in dentistry to produce digital study models. These obviate the need for physical storage space and a software can be used to calculate PAR scores more conveniently and at a faster speed. A review of the current literature showed that the CS 3600 intra oral scanner by Carestream Dental demonstrated acceptable accuracy for clinical use.

In this study, patients will receive the usual impressions and their moulds will be PAR scored manually (usual care pathway). In addition, they will also receive intra oral scans with Carestream 3600 and the digital models will be scored by a computer. Manual and digital scores will be compared and analysed for any significant discrepancies.

Conditions

  • Malocclusion

Interventions

DEVICE

Carestream 3600 intra oral scan

Carestream 3600 is CE marked intra oral scanner manufactured by Carestream Dental. It is already licensed for use in dentistry to produce digital study models. The scanner is 220 x 38 x 58 mm large and operates using video capture technology. It emits no radiation. Carestream 3600 is connected to a computer via a USB port and a computer software (CS Model +) converts the scan into digital study models using trigonometric calculations. The software is then used to take measurements on the digital models and calculate PAR scores

Sponsors & Collaborators

Principal Investigators

  • Martyn Cobourne, BDS MOrth · King's College London

Eligibility

Min Age
11 Years
Max Age
50 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2018-10-15
Primary Completion
2018-12-15
Completion
2019-01-07

Countries

  • United Kingdom

Study Locations

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Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03405961 on ClinicalTrials.gov