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

Study Overview
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Brief Summary
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Evaluation of PMMA pediatric crowns

Detailed Description
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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.

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

Conditions
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Decay, Dental

Intervention / Treatment
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* Other: PMMA crowns


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Children included in the study should conform to the following criteria: Aged 5-8 years old Medically free Patient should suffer from extensively decayed primary lower second molar that will undergo pulpotomy. 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: Children who are extremely uncooperative and difficult to manage. Children suffering from any medical conditions that can't be managed in the clinic. Teeth with decay extending beneath the free gingival margin. Teeth that were grossly broken down, that cannot be restored. Presence of uncontrolled bleeding. Clinical or radiographic evidence of non-vitality such as presence of an abscess or a sinus, obvious discoloration, and premature hypermobility.

Ages Eligible for Study
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Minimum Age: 5 Years
Maximum Age: 8 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Stainless steel crowns<br>3M ESPE | Other: PMMA crowns<br>* New type of pediatric crowns<br>|
| Experimental: Zirconia crowns<br>Nu Smile | Other: PMMA crowns<br>* New type of pediatric crowns<br>|
| Experimental: PMMA crowns<br>Dental Direkt | Other: PMMA crowns<br>* New type of pediatric crowns<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Gingival health | Plaque index | 6 months | 
| Crown survival | Fracture | 6 months |