Comparative Evaluation of Gingival Health and Bacterial Adhesion in Bioflx vs. Zirconia Crowns on Primary Molars

Cairo University (CU)

Status: Not yet enrolling

Conditions: Carious Primary Molars

Treatments: Other: (Group A: Bioflx crowns); Other: (Group B) : Preformed Zirconia crown

Study type: Interventional

Funder types: Other

Identifiers

NCT06933927

EGHBA-BFXZRC-PM-2025

Details and patient eligibility

About

The goal of this clinical trial is to evaluate the Evaluation of Gingival Health and Bacterial Adhesion of Bioflx Crowns Compared to Zirconia Crowns on Primary Molars of Bioflx crowns compared to zirconia crowns in the restoration of primary molars. The main question[s] it aims to answer is there are the differences in bacterial adhesion and gingival health between bioflx and zirconia crowns The study will also assess the clinical performance of both types of crowns in terms of bacterial adhesion , child and parents satisfaction,as well as preparation time.

Full description

Dental caries is an oral disease most ubiquitous among children, characterized by a series of demineralization and remineralization cycles. If left untreated, it can progress to cavitated lesions. Usually, the familiar method of managing multi-surface carious lesions in primary teeth with stainless steel crowns .Streptococcus mutans is considered to be the main colonizer and primary etiological factor in caries progression as it stimulates the production of glucans from the food substrates. Research has indicated that S. mutans can be isolated from plaque samples. Consequently the long-term success of a restored tooth is significantly affected by the adhesion of S. mutans to the preformed crowns.Bacterial adhesion on zirconia are sparse. An in vitro study reported the initial bacterial adhesion on the surface of zirconia to be less compared with resins. When a primary tooth is restored with a full-coverage restoration, it establishes a fresh environment conducive to microbial adhesion. Bioflx Crowns the first flexible, durable, and esthetic preformedcrown for primary molars .BFCs are monochromatic, metal-free, tooth-colored crowns used in the medical device industry having high strength, flexibility, and durability. These crowns are autoclavable and are similar to SSC in tooth preparation. Additionally, they offer a cost benefit compared to zircon crowns,

Enrollment: 28 estimated patients

Sex: All

Ages: 4 to 8 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. patients aged 4-8 years.
2. decayed in primary molars require full-coverage crowns.
3. No history of systemic diseases affecting oral health.
4. Cooperative children.

Exclusion criteria

-patients with severe medical conditions, badly decayed in primary molars and trauma.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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28 participants in 2 patient groups

Bioflex crowns

Experimental group

Description:

Bioflx Crowns (BFCs) the first flexible, durable, and esthetic preformedcrown for primary molars .BFCs are monochromatic, metal-free, tooth-colored crowns used in the medical device industry having high strength, flexibility, and durability. These crowns are autoclavable and are similar to SSC in tooth preparation. Additionally, they offer a cost benefit compared to zircon crowns

Treatment:

Other: (Group A: Bioflx crowns)

Zirconia crowns

Experimental group

Description:

zirconia crowns are frequently chosen as a comparator due to their established clinical performance and favorable biological properties. Studies have demonstrated that zirconia crowns exhibit lower bacterial adhesion, particularly of Streptococcus mutans, compared to stainless steel crowns (SSCs). highly polished and smooth surface of zirconia, which minimizes plaque accumulation and subsequent gingival inflammation.

Treatment:

Other: (Group B) : Preformed Zirconia crown