Evaluating the Efficiency of Newly Designed Prefabricated PMMA Crowns for Restoring Primary Teeth in Comparison to Stainless Steel and Zirconia Crowns

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04479046

Enrollment

Registered

2020-07-21

Start date

2018-01-01

Completion date

2019-06-01

Last updated

2020-07-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Decay, Dental

Brief summary

Evaluation of PMMA pediatric crowns

Detailed description

The aim of the present study is to evaluate the PMMA crowns regarding the following aspects: I. Clinical evaluation of PMMA crowns regarding wear of opposing teeth when compared to zirconia crowns and stainless steel crowns after 6 months, and 12 months. II. Color stability of PMMA crowns and zirconia crowns after 6 months, and 12 months. III. Gingival health of restored teeth after 6 months, and 12 months. IV. Patient's satisfaction regarding the appearance and clinical performance of PMMA crowns when compared to stainless steel crowns and zirconia crowns through a given questionnaire.

Interventions

OTHERPMMA crowns

New type of pediatric crowns

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

5 Years to 8 Years

Healthy volunteers

Inclusion criteria

* Children included in the study should conform to the following criteria: 1. Aged 5-8 years old 2. Medically free 3. Patient should suffer from extensively decayed primary lower second molar that will undergo pulpotomy. 4. The anticipated exfoliation date of the selected primary teeth has to be more than 12 months from the date of the study start.

Exclusion criteria

Children with the following criteria will be totally excluded from the study:  1. Children who are extremely uncooperative and difficult to manage. 2. Children suffering from any medical conditions that can't be managed in the clinic. 3. Teeth with decay extending beneath the free gingival margin. 4. Teeth that were grossly broken down, that cannot be restored. 5. Presence of uncontrolled bleeding. 6. Clinical or radiographic evidence of non-vitality such as presence of an abscess or a sinus, obvious discoloration, and premature hypermobility.

Design outcomes

Primary

Measure	Time frame	Description
Gingival health	6 months	Plaque index
Crown survival	6 months	Fracture

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026