CompletedNot Applicable

3D-printed Crowns Versus Zirconia Crowns for Primary Molars

Egypt46 participantsStarted 2023-07-01

Plain-language summary

The aim of the present study is to compare between 3D-printed crowns and prefabricated zirconia crowns for restoring pulpally-treated primary molars regarding the following aspects: 1. In vivo: Evaluate the clinical outcome of 3D printed crowns in comparison to prefabricated zirconia crowns in pulpally-treated primary molars as well as parent satisfaction. 2. In vitro: Comparative analysis of fracture resistance and marginal gap of 3D printed crowns and prefabricated zirconia crowns

Who can participate

Age range

4 Years – 7 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Children included in the study should stratify to the following criteria: * Age range of children from 4 -7 years. * Having at least one vital primary molar with deep carious lesion indicated for pulpotomy or pulpectomy. * The expected exfoliation date of the selected primary teeth must be more than 12 months from the start date of the study. Exclusion Criteria: * a) Uncooperative children who needs sedation or general anesthesia. b) Children with physical, intellectual disability or medical conditions that may complicate treatment. c) Teeth with poor prognosis due to the presence of an abscess or a sinus, mobility or advanced bone resorption. d) Presence of internal or external root resorption.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Gingival health (gingival index)

Timeframe: 1 year follow up for vivo part only

plaque index

Timeframe: 1year follow up

Marginal integrity

Timeframe: 1yeat follow up

crown retention

Timeframe: one year follow up

In vitro marginal gap

Timeframe: Immediately after samples preparation

in vitro fracture resistance

Timeframe: Immediately after samples preparation

Trial details

NCT IDNCT06068244

SponsorAin Shams University

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2024-11-30

View on ClinicalTrials.gov More Dental Caries in Children trials

Plain-language summary

Who can participate

Age range

4 Years – 7 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

What they're measuring

Gingival health (gingival index)

Timeframe: 1 year follow up for vivo part only

plaque index

Timeframe: 1year follow up

Marginal integrity

Timeframe: 1yeat follow up

crown retention

Timeframe: one year follow up

In vitro marginal gap

Timeframe: Immediately after samples preparation

in vitro fracture resistance

Timeframe: Immediately after samples preparation