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Comparison of Resin Crowns and Prefabricated Zirconia Crowns for Lower Primary Molars in Children.

A Comparative Evaluation of Three-Dimensional Printed Resin Crowns and Prefabricated Zirconia Crowns for Primary Mandibular Molars: A Randomized Controlled Trial - NIL

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2026/05/110714
Enrollment
30
Registered
2026-05-20
Start date
Unknown
Completion date
Unknown
Last updated
2026-06-01

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

Conditions

None listed

Interventions

Intervention1: Three dimensional printed resin crowns: Three dimensional printed resin crowns will be placed on primary mandibular second molars after tooth preparation. Digital impressions will be ob

Sponsors

Manish Kumar Singh
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 1.Children aged 4 to 8 years. 2.Healthy children with American Society of Anesthesiologists physical status one and two. 3.Cooperative children with positive or definitely positive Frankl behaviour rating. 4.Restorable bilateral mandibular primary second molars requiring full coverage restoration due to multisurface caries or following pulp therapy. 5.Parents willing to allow their children to participate and provide written informed consent. 6.Teeth not expected to exfoliate for at least 2 years.

Exclusion criteria

Exclusion criteria: 1.Teeth with preshedding mobility, abscess, sinus tract, or pathological root resorption. 2.Children with parafunctional habits such as bruxism. 3.History of allergy to dental materials. 4.Teeth which is not restorable. 5.Teeth with developmental defects or severe malformation. 6.Patient with any systemic diseases with oral manifestations that can influence outcome, will be excluded.

Design outcomes

Primary

MeasureTime frame
Clinical performance of three-dimensional printed resin crowns and prefabricated zirconia crowns in primary mandibular second molars assessed by Modified USPHS criteria (retention, marginal integrity, occlusal wear, anatomic form, secondary caries, crown dislodgement).Timepoint: Baseline, 1 month, 3 months, 6 months, and 9 months—

Secondary

MeasureTime frame
Plaque accumulation assessed using Plaque Index (Silness and Loe, 1967) Timepoint: Baseline, 1 month, 3 months, 6 months, and 9 months;Gingival health assessed using Gingival Index (Loe and Silness, 1963)Timepoint: Baseline, 1 month, 3 months, 6 months, and 9 months;Parental and child satisfaction assessed using Likert scaleTimepoint: Baseline, 1 month, 3 months, 6 months, and 9 months—

Countries

India

Contacts

Public ContactSaima Yunus Khan

Dr. Ziauddin Ahmad Dental College A.M.U., Aligarh

dr.saima.y.khan@gmail.com9236642220

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Jun 11, 2026