Evaluation of Bioflex and Zirconia Crowns Versus Stainless Steel Crowns on Primary Molars: Randomized Controlled Clinical Trial

Evaluation of Bioflex and Zirconia Crowns Versus Stainless Steel Crowns on Primary Molars: Randomized Controlled Clinical Trial

• The goal of this clinical trial is to evaluate the clinical effectiveness of bioflex crowns and zirconia crowns compared to stainless steel crowns when

• restoring primary molars 45 participant who their ages range between 6 and 8 years participated in this study. The participants will be divided into three groups: group (A) for Bioflex crown (n=15), group (B) for Zirconia crown (n=15) and group ( C) for Stainless steel crown(n=15).

The periodontal health will be evaluated using gingival index and plaque index .Clinical success will be assessed according to the Modified United States Public Health Service Evaluation (USPHS) criteria regarding: crown retention ,marginal integrity, surface roughness and color change. Moreover, parental and child satisfaction will be evaluated.

Inclusion Criteria:

• Children who are free from any systemic disease.
• Cooperative children (positive/ definitely positive) according to Frankl's behavior rating scale.
• Children with good to fair oral hygiene according to Loe and Silness plaque index.
• Primary molars with deep carious lesion, that are indicated for pulpotomy and crown.
• Primary molars having two-thirds of root structure left radiographically
• Parents' willingness to participate through informed written consent

Exclusion Criteria:

• Children with oral parafunctional habits.
• Primary molars with bifurcation involvement
• Presence of abscess or fistula related to the selected tooth
• Primary molars with insufficient crown structure