Operator Experience and Restorative Clinical Performance of Posterior Composite Restorations

NCT07375706 | Completed

• 1 other identifier: 08.07.2024-E.157036
• Study Type: observational
• Target: 200
• Locations: 1 country
• Sites: 1

Brief Summary

This retrospective observational study aimed to evaluate the long-term clinical performance of posterior resin composite restorations placed by undergraduate dental students and postgraduate specialty trainees in pediatric patients. Dental records of children aged 6 to 13 years who received posterior composite restorations at a university-based pediatric dentistry clinic were reviewed. A total of 200 restorations placed on primary and permanent molars were clinically evaluated during routine follow-up visits using standardized assessment systems. The modified United States Public Health Service (USPHS) criteria and the FDI World Dental Federation criteria were used to assess esthetic, functional, and biological outcomes. Evaluations were performed by a blinded examiner, and radiographic assessments were conducted when clinically indicated. Clinical outcomes were compared between operator groups according to training level, follow-up duration, restoration type, tooth type, and endodontic treatment history. The findings of this study aim to provide insight into the impact of operator experience on the clinical success and longevity of posterior resin composite restorations in pediatric dentistry and to support evidence-based improvements in undergraduate and postgraduate dental education.

Conditions

Dental Restoration Failure

Keywords

Pediatric Dentistry; USPHS Criteria; FDI Criteria; Operator Experience; Dental Restoration Longevity

Outcome Measures

Primary Outcomes (2)

• Clinical Performance of Posterior Resin Composite Restorations Assessed by Modified USPHS-Ryge Criteria

  The clinical performance of posterior resin composite restorations was evaluated using the modified United States Public Health Service (USPHS-Ryge) criteria. Based on esthetic, functional, and biological parameters, restorations were categorized into two groups according to clinical acceptability: acceptable (+) and unacceptable (-).

  Up to 24 months

• Clinical Performance of Posterior Resin Composite Restorations Assessed by FDI World Dental Federation Criteria

  The clinical performance of posterior resin composite restorations was evaluated using the FDI World Dental Federation (Hickel) criteria, based on esthetic, functional, and biological parameters. Restorations were scored on a 5-point ordinal scale ranging from 1 to 5, where scores of 1 and 2 were considered successful, score 3 clinically acceptable, and scores of 4 and 5 unsuccessful. Higher scores indicate worse clinical performance.

  Up to 24 months

Secondary Outcomes (2)

• Comparison of Clinical Performance Between Undergraduate and Postgraduate Operators Using USPHS Criteria

  Up to 24 month

• Comparison of Clinical Performance Between Undergraduate and Postgraduate Operators Using FDI Criteria

  Up to 24 month

Study Arms (2)

Undergraduate Operators

Posterior resin composite restorations placed by undergraduate dental students as part of routine clinical training in the Department of Pediatric Dentistry. All restorations were performed under faculty supervision and evaluated retrospectively using standardized clinical assessment criteria.

Postgraduate Operators

Posterior resin composite restorations placed by postgraduate specialty trainees in pediatric dentistry during routine clinical care. Restorations were retrospectively evaluated using the same clinical assessment protocols as the undergraduate group.

Eligibility Criteria

• Age: 6 Years - 13 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17)
• Sampling Method: Non-Probability Sample

Study Population

The study population consisted of children aged 6 to 13 years who received posterior resin composite restorations on primary or permanent molar teeth at a university-based pediatric dentistry clinic. All included restorations were placed by undergraduate dental students or postgraduate specialty trainees as part of routine clinical care. Patients were identified retrospectively through institutional dental records, and only cases with sufficient clinical documentation and a minimum follow-up period of three months were included for evaluation.

You may qualify if:

• Children aged 6 to 13 years at the time of treatment
• Patients who received posterior resin composite restorations on primary or permanent first or second molars
• Restorations placed by undergraduate dental students or postgraduate specialty trainees in the Department of Pediatric Dentistry
• Restorations with a minimum follow-up period of 3 months
• Availability of complete clinical records allowing retrospective evaluation

You may not qualify if:

• Restorations placed by clinicians outside the undergraduate or postgraduate trainee groups
• Restorations performed using materials other than resin composite
• Restorations placed on teeth other than posterior molars
• Restorations with a follow-up duration shorter than 3 months
• Incomplete or missing clinical records preventing standardized evaluation

Sponsors & Collaborators

• Bezmialem Vakif University: lead

Study Sites (1)

Bezmialem Vakıf University

Istanbul, Fatih, 34093, Turkey (Türkiye)

Location

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: RETROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: DDS, Specialist in Pediatric Dentistry

Study Record Dates

• First Submitted: January 13, 2026
• First Posted: January 29, 2026
• Study Start: June 3, 2024
• Primary Completion: January 23, 2025
• Study Completion: February 17, 2025
• Last Updated: January 29, 2026

Record last verified: 2026-01

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)