NCT04922086

Digital Planning and Guided Dual Technique in Aesthetic Crown Lengthening

Completed NA Last updated 10 May 2024

What this trial tests

NA trial testing Conventional aesthetic crown lengthening surgery in Tooth Eruption Disorder in 24 participants. Completed in 1 August 2021.

Timeline

19 September 2019

Primary endpoint
1 July 2021

1 August 2021

Quick facts

Lead sponsor	Universidade Federal de Alfenas
Phase	NA
Status	Completed
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	double
Primary purpose	treatment
Enrollment	24
Start date	19 September 2019
Primary completion	1 July 2021
Estimated completion	1 August 2021
Sites	1 location across Brazil

Drugs / interventions tested

• Conventional aesthetic crown lengthening surgery
• Guided dual aesthetic crown lengthening surgery

Conditions studied

• Tooth Eruption Disorder — all drugs for Tooth Eruption Disorder →

Sponsor

Universidade Federal de Alfenas — full company profile →

Who can join

Adults 18 to 50, any sex, with Tooth Eruption Disorder. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

Excessive gingival exposure, commonly named gingival smile, results in a dentogingival disharmony. One of the gingival smile treatment is the aesthetics-related crown lengthening surgery (ACL) to provide a adequate clinical crown length and diminish gingival display. In this context, digital planning and guided dual technique have been proposed to increase the effectiveness and predictability of the ACL. In this technique, an facial and dental analysis of the patient is performed and transferred to a digital model obtained by intraoral digital scan. The digital model is used to create a double guide that will determine the final position of the gingival and alveolar margin in the ACL. Despite the technique showing promising results, clinical studies evaluating the effectiveness of this technique are scarce. The present study aims to evaluate the digital planning and guided dual technique in the ACL in comparison to conventional technique in relation to the predictability/stability of the gingival margin positioning and patient satisfaction after the ACL. Twenty-four patients diagnosed with altered passive eruption type I subcategory B will be selected and divided into two groups. In the control group (n = 12) patients will be submitted to the conventional ACL planned using clinical examination; in the test group (n = 12) patients will be submitted to ACL using cone beam computed tomography (CBCT), digital planning and guided dual technique. Periodontal clinical parameters including probing depth (PS), clinical attachment level (CAL), clinical crown length (CCL), anatomical crown length (ACL) and cemento-enamel junction to alveolar bone crest distance will be evaluated clinically at baseline, in the immediate postoperative, 4, 8 and 12 months after the procedure. Participants will be submitted to questionnaires to assess satisfaction with the smile, gum and tooth characteristics and experience with the procedure. The investigators aim to demonstrate with the study the effectiveness of the both techniques and evaluate the clinical cost benefit for the patient and the dentist of the guided dual technique in relation to the conventional ACL technique.

Publications & conference data

1 peer-reviewed publication reference this trial (live from Europe PMC):

1. Digital planning and guided dual technique in esthetic crown lengthening: a randomized controlled clinical trial.
   Carrera TMI, Freire AEN, de Oliveira GJPL, Dos Reis Nicolau S, et al · · 2023 · cited 15× · PMID 36409356 · DOI 10.1007/s00784-022-04780-8