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970-nm Diode Laser Versus Liquid Nitrogen Cryotherapy in Maxillary Labial Frenectomy (MLF-DL-KRYO)

13 juli 2026 bijgewerkt door: Kutahya Health Sciences University

Comparison of Salivary Cortisol Response and Early Postoperative Outcomes Following 970-nm Diode Laser and Liquid Nitrogen Cryotherapy in Maxillary Labial Frenectomy: A Randomized Single-Blind Clinical Trial

This prospective, randomized, single-blind, assessor-blinded, parallel-group clinical trial aims to compare the effects of 970-nm diode laser and liquid nitrogen cryotherapy in patients requiring maxillary labial frenectomy.

The primary objective is to compare the change in salivary cortisol levels from baseline to postoperative day 2 between the two treatment groups. Secondary objectives include comparison of postoperative pain, edema, interincisal mouth opening, analgesic consumption, operation duration, state anxiety, clinical wound healing, and adverse events.

Eligible adult patients with an indication for maxillary labial frenectomy will be randomly assigned to receive either 970-nm diode laser frenectomy or liquid nitrogen cryotherapy. Salivary cortisol samples and clinical outcomes will be assessed during the early postoperative follow-up period.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Maxillary labial frenulum abnormalities may be associated with diastema, plaque accumulation, periodontal irritation, gingival recession, oral hygiene difficulty, functional discomfort, and esthetic concerns. Frenectomy may be indicated when the frenulum is hypertrophic, short, thick, or inserted close to the interdental papilla.

Conventional scalpel frenectomy is effective but may be associated with intraoperative bleeding, need for suturing, postoperative pain, edema, and reduced patient comfort. Minimally invasive approaches such as diode laser surgery and cryotherapy may offer potential advantages in oral soft tissue procedures.

This study will compare two minimally invasive approaches for maxillary labial frenectomy: 970-nm diode laser and liquid nitrogen cryotherapy. Participants will be randomized into two parallel groups. In the diode laser group, frenectomy will be performed using a 970-nm diode laser at 2 W in continuous wave mode with a 320-micrometer sterile fiber tip using a contact technique. In the liquid nitrogen cryotherapy group, open-spray cryotherapy will be applied to the maxillary labial frenulum region with two freeze-thaw cycles.

The primary endpoint is the change in salivary cortisol level from baseline to postoperative day 2. Secondary endpoints include postoperative day 7 salivary cortisol change, postoperative pain measured by visual analog scale, edema, interincisal mouth opening, total analgesic consumption, operation duration, State-Trait Anxiety Inventory-State score, Landry, Turnbull and Howley wound healing index scores, and postoperative complications or adverse events.

All procedures and salivary sampling will be standardized and performed in the morning to reduce the influence of circadian variation on cortisol measurements. The study will be conducted at the Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Kutahya Health Sciences University.

Studietype

Ingrijpend

Inschrijving (Geschat)

40

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Locaties

  • Turkije (Türkiye)
    • Kütahya
      • Kütahya, Kütahya, Turkije (Türkiye), 43020
        • Kütahya Health Sciences University Faculty of Dentistry
        • Contact:
        • Contact:
        • Hoofdonderzoeker:
          • Muhammet Yasin Pektaş, Asst. Prof., DDS

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Nee

Beschrijving

Inclusion Criteria:

  • Age between 18 and 65 years.
  • Systemically healthy, ASA I status.
  • Clinical indication for maxillary labial frenectomy.
  • Ability to attend postoperative follow-up visits.
  • Provision of written informed consent.

Exclusion Criteria:

  • Systemic or local corticosteroid use within the last 6 months.
  • Endocrine disease that may affect cortisol levels.
  • Pregnancy or lactation.
  • Active oral infection.
  • Chronic analgesic or anti-inflammatory drug use.
  • Psychiatric medication use.
  • Smoking.
  • ASA II or higher systemic status.
  • Inability to attend follow-up visits.
  • Refusal to participate in the study.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Enkel

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: 970-nm Diode Laser Frenectomy
Participants randomized to this arm will undergo maxillary labial frenectomy using a 970-nm diode laser. The procedure will be performed with a SiroLaser Advance device at 970 nm wavelength, 2 W power, continuous wave mode, and a 320-micrometer sterile fiber tip using a contact technique. The total laser application time will be standardized as 2 minutes. The surgical area will not be sutured and will be left to heal by secondary intention.
Procedure: 970-nm Diode Laser Frenectomy
Maxillary labial frenectomy will be performed using a 970-nm diode laser device at 2 W power in continuous wave mode with a 320-micrometer sterile fiber tip using a contact technique. The total laser application time will be standardized as 2 minutes. The surgical area will not be sutured and will be left to heal by secondary intention.
Andere namen:
  • Diode laser frenectomy
Experimenteel: Liquid Nitrogen Cryotherapy
Participants randomized to this arm will receive liquid nitrogen cryotherapy applied to the maxillary labial frenulum region using an open-spray technique. Two freeze-thaw cycles will be performed; each freezing cycle will last 15 seconds, with passive complete thawing between cycles. No mechanical excision will be performed after cryotherapy. The target tissue is expected to be eliminated through cryogenic necrosis and secondary healing. The surgical area will not be sutured.
Procedure: Liquid Nitrogen Cryotherapy
Liquid nitrogen cryotherapy will be applied to the maxillary labial frenulum region using an open-spray technique. Two freeze-thaw cycles will be performed; each freezing cycle will last 15 seconds, with passive complete thawing between cycles. No mechanical excision will be performed after cryotherapy, and the surgical area will not be sutured.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in salivary cortisol level from baseline to postoperative day 2
Tijdsspanne: Baseline and postoperative day 2
Salivary cortisol will be measured in unstimulated saliva samples using an ELISA method. For each participant, the change in salivary cortisol level from the preoperative baseline measurement to postoperative day 2 will be calculated and compared between the two intervention groups. Results will be recorded in nmol/L.
Baseline and postoperative day 2

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Change in salivary cortisol level from baseline to postoperative day 7
Tijdsspanne: Baseline and postoperative day 7
Salivary cortisol will be measured in unstimulated saliva samples using an ELISA method. For each participant, the change in salivary cortisol level from the preoperative baseline measurement to postoperative day 7 will be calculated and compared between the two intervention groups. Results will be recorded in nmol/L.
Baseline and postoperative day 7
Change in postoperative edema
Tijdsspanne: Baseline, postoperative day 2, and postoperative day 7
Postoperative edema will be assessed using standardized facial measurements. Changes in edema measurements from baseline to postoperative day 2 and postoperative day 7 will be calculated and compared between the two intervention groups.
Baseline, postoperative day 2, and postoperative day 7
Postoperative pain intensity
Tijdsspanne: Postoperative 6 hours, 12 hours, 24 hours, day 2, and day 7
Postoperative pain intensity will be assessed using a 0-to-10 visual analog scale, where higher scores indicate greater pain intensity.
Postoperative 6 hours, 12 hours, 24 hours, day 2, and day 7
Change in interincisal mouth opening
Tijdsspanne: Baseline, postoperative day 2, and postoperative day 7
Interincisal mouth opening will be measured in millimeters. Changes from baseline to postoperative day 2 and postoperative day 7 will be calculated and compared between the two intervention groups.
Baseline, postoperative day 2, and postoperative day 7
Total analgesic consumption during the first postoperative week
Tijdsspanne: Postoperative days 0 to 7
Analgesic consumption will be recorded as the total number of analgesic tablets used by each participant during the first postoperative week.
Postoperative days 0 to 7
Operation duration
Tijdsspanne: During the intervention procedure
Operation duration will be recorded in minutes for each participant and compared between the two intervention groups.
During the intervention procedure
State anxiety score
Tijdsspanne: Baseline, postoperative day 2, and postoperative day 7
State anxiety will be assessed using the State-Trait Anxiety Inventory-State form. Total scores will be recorded preoperatively and on postoperative days 2 and 7, and compared between the two intervention groups.
Baseline, postoperative day 2, and postoperative day 7
Clinical wound healing score
Tijdsspanne: Postoperative days 2, 7, 14, and 21
Clinical wound healing will be assessed using the Landry, Turnbull and Howley Wound Healing Index. Wound healing scores will be recorded on postoperative days 2, 7, 14, and 21 and compared between the two intervention groups.
Postoperative days 2, 7, 14, and 21
Postoperative complications and adverse events
Tijdsspanne: From the intervention procedure through postoperative day 21
The occurrence of postoperative complications or adverse events, including unexpected pain, bleeding, infection, wound healing problems, or other procedure-related adverse events, will be recorded during the follow-up period.
From the intervention procedure through postoperative day 21

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Kutahya Health Sciences University

Onderzoekers

  • Hoofdonderzoeker: Muhammet Yasin Pektaş, Asst. Prof, DDS, Kutahya Health Sciences University, Faculty of Dentistry, Department of Oral and Maxillofacial Surgery

Publicaties en nuttige links

De persoon die verantwoordelijk is voor het invoeren van informatie over het onderzoek stelt deze publicaties vrijwillig ter beschikking. Dit kan gaan over alles wat met het onderzoek te maken heeft.

Algemene publicaties

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

30 juli 2026

Primaire voltooiing (Geschat)

2 mei 2027

Studie voltooiing (Geschat)

21 mei 2027

Studieregistratiedata

Eerst ingediend

13 juli 2026

Eerst ingediend dat voldeed aan de QC-criteria

13 juli 2026

Eerst geplaatst (Werkelijk)

16 juli 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

16 juli 2026

Laatste update ingediend die voldeed aan QC-criteria

13 juli 2026

Laatst geverifieerd

1 juli 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • MLF-DL-KRYO-2026-01

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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