Clinical trial NCT06806319: Assessment of Growth Factors Levels Associated with Wound Healing After Soft Tissue Crown Lengthening
Official title: Soft Tissue Crown Lengthening and Attached Gingiva Remodeling: Assessment of Growth Factors Levels Associated with Wound Healing
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Gingival Overgrowth
Keywords: Diode Laser
Electrosurgery
Crown Lengthening
Gingival crevicular fluid
Fibroblast Growth Factor
Platelet-Derived Growth Factor
Transforming Growth Factor beta1
Lead sponsor: Al-Azhar University
Sponsor class: OTHER
First posted: 2025-02-04
Enrollment: 80
Sex: ALL
Minimum age (years): 18
Maximum age (years): 40
Standard ages: ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: Clinicians often encounter the need for crown lengthening in the practice of dentistry and have to make treatment decisions taking into consideration how to best address the biological, functional, and esthetic requirements of each particular case. The concept of crown lengthening was first introduced by D.W. Cohen (1962) and is presently a procedure that often employs some combination of tissue reduction or removal , osseous surgery , and/or orthodontics for tooth exposure and increasing the extent of supra gingival tooth structure for restoration of aesthetic purposes . Gingivectomy and gingivoplasty considered kind of crown lengthening procedure. Gingivectomy is defined as the excision of the soft tissue wall of a pocket. The procedure is usually combined with the recontouring of hyperplastic tissue by gingivectoplasty to restore physiological gingival form . Gingivoplasty is a reshaping of the gingiva to create physiologic gingival contours, with the sole purpose of recontouring the gingiva in the absence of pockets. In doing so, the complete anatomical crown becomes exposed and pseudo pockets are eliminated creating a better environment for periodontal health. Treatment options for crown lengthening procedures include: Surgical, Electrocautery or by Laser. The aim of the present study was to compare the practical effectiveness and postoperative parameters of using diode laser and electrocautery for crown lengthening procedure.


Eligibility criteria: Inclusion Criteria:

1. Men and women aged ≥ 18 years. 2. Patients with short clinical crowns to enhance esthetic, exposure of subgingival caries for prosthetic replacement, exposure of a fracture or combination. 3. All patients were free from any systemic diseases according to the criteria of Modified Cornell Medical Index. 4. All patients need soft tissue removal and don't need osseous resection. 5. Full-Mouth Plaque Score (FMPS) ≤ 20% at baseline. 6. Full-Mouth Bleeding Score (FMBS) ≤ 20% at baseline.

Exclusion Criteria:

1. Light smokers i.e. smoking \> 10 cigarettes/day. 2. Patients with medical conditions contraindicating surgical interventions. 3. Pregnancy or lactation. 4. Patients with active periodontal disease (PD ≥ 6 mm) 5. Clinical and/or radiographic signs of periapical pathology. 6. Patients with pacemakers.

Primary outcomes:
measure: Epithelization rate
timeFrame: From enrollment to the end of treatment at 3 weeks
measure: Transforming Growth Factor-β1 (TGF-β1) levels assessment
timeFrame: From enrollment to the end of treatment at 8 weeks
Secondary outcomes:
Other outcomes:
Locations:
city: Assiut
country: Egypt
facility: Faculty of dental medicine, Al-Azhar University (Assiut branch)
Study officials:
affiliation: Faculty of Dental Medicine, Al-Azhar University (Assiut branch)
name: Asem M lecturer, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Zeballos BK, Rubina YN, Meza-Mauricio J, Cafferata EA, Vergara-Buenaventura A. Laser gingivectomy for maintaining periodontal health in fixed orthodontic patients: a systematic review. Lasers in Dental Science. 2024 Dec;8(1):1-5.
citation: Mehrotra S, Ahuja A, Chowdhary Z, Adhupia KS, Bajaj A, Loitongbam M. Evaluation of the Effect of Diode Laser on Healing after Gingivectomy. Pesquisa Brasileira em Odontopediatria e Clínica Integrada. 2025 Jan 15;25:e230116-.
citation: Rakmanee T, Calciolari E, Olsen I, Darbar U, Griffiths GS, Petrie A, Donos N. Expression of growth mediators in the gingival crevicular fluid of patients with aggressive periodontitis undergoing periodontal surgery. Clin Oral Investig. 2019 Aug;23(8):3307-3318. doi: 10.1007/s00784-018-2752-z. Epub 2018 Nov 29.
citation: Kuru L, Yilmaz S, Kuru B, Kose KN, Noyan U. Expression of growth factors in the gingival crevice fluid of patients with phenytoin-induced gingival enlargement. Arch Oral Biol. 2004 Nov;49(11):945-50. doi: 10.1016/j.archoralbio.2004.04.010.
citation: Guler B, Isler SC, Uraz A, Bozkaya S, Cetiner FD. The comparison of postoperative wound healing following different gingivectomy techniques: A randomized prospective clinical trial.