No-Finish-Line tooth prep may boost dental crown success
NCT ID NCT04403230
First seen Jul 07, 2026 · Last updated Jul 08, 2026 · Updated 1 time
Summary
This study tests a tooth preparation method called the biologically oriented preparation technique (BOPT), which avoids creating a finish line on the tooth. Researchers will compare gum health and crown or bridge complications in 52 adults who need their dental restorations replaced. The goal is to see if this technique leads to better long-term outcomes for both gums and prosthetics.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Biologically oriented preparation technique (BOPT) for dental crowns
- What this could lead to
- If successful, this technique could improve gum health and reduce complications for dental crowns and bridges.
- What could go wrong
- This is a small, single-center study with 52 patients, so results may not apply to everyone. The technique may not prevent all gum or prosthetic problems.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
52 people
The number who actually took part.
- Started
-
Jan 2013
- Expected to finish
-
Jan 2030
An estimate. End dates often move.
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 years and older
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * adult patients (aged over 18 years). * non-smokers. * periodontally healthy or periodontally managed. * patients who had undergone restoration with fixed prostheses (one-piece crowns or fixed partial dentures FPDs) in the aesthetic zone (incisors, canines, premolars, first molars), which needed to be replaced due to biological, esthetic or some other type of problem. Exclusion Criteria: * patients who were smokers. * patients who presented unmanaged parafunctional habits. * patients with severe systemic diseases.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Outcome are added.
By submitting, you agree to our Terms of use
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Intra-Articular adrenaline versus tourniquet in knee arthroscopy in a tertiary care center: a prospective cohort study
- A device that lets amputees feel their prosthetic limb move
- C-section blood pressure drugs: which works best for baby?
- Can less testing in the ICU save lives without causing harm?
- ER timing could be key to saving heart attack victims
- New grid could help detect preemie delays sooner