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NCT Number: NCT07334015

Treatment of Excessive Gingival Display (Lip Repositioning and Z Plasty)

evaluate clinically the postoperative outcomes of the Z plasty frenectomy technique in comparison to modified lip repositioning surgery

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Key information

Conditions

Excessive Gingival Display

Age range

18 year–30 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Suez Canal University

Ismailia, Egypt

About this study

Excessive gingival display is a cosmetic problem where it is usually managed by different approaches such as lip repositioning.

Aim: Is to evaluate clinically the postoperative outcomes of the Z plasty frenectomy technique in comparison to modified lip repositioning surgery Methodology: The clinical study will include 16 patients with gummy smile divided into two groups equally and randomly according to technique using www.randomizer.org.

Group 1: will be treated with conventional modified lip repositioning technique and the labial frenum will be left intact.

Group 2: will be treated with z plasty frenectomy. Clinical follow up will be at 1,3, 6 and 9 months.

Clinical evaluation will be done through using (VAS). It will be used to measure patient satisfaction through pain killer scale . - Likert scale to measure patient satisfaction - Periodontal probe will be used to measure the relapse. Also signs of infection will be recorded.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Female patients aged 18 to 30 years
  • ASA physical status I or II
  • Presence of excessive gingival display (gummy smile)
  • Indication for surgical treatment of excessive gingival display
  • Willingness to participate and attend follow-up visits

Exclusion criteria

  • Poor oral hygiene
  • Patients with active acute infection
  • Patients with poor oral habits
  • Pregnant or lactating women
  • Heavy smokers
  • Alcohol or drug addicts

Treatment and study plan

z plasty frenectomy

Procedure

Z-plasty frenectomy is a surgical procedure in which the frenum is released and rearranged using a Z-shaped incision. This technique helps improve tissue mobility and reduce tension. The procedure is performed under local anesthesia"

Other names: Z Plasty

Modified lip repositioning

Procedure

"Modified lip repositioning is a minimally invasive surgical technique used to reduce excessive gingival display. The procedure involves removing a small strip of mucosa and repositioning the upper lip to limit its upward movement during smiling. It is performed under local anesthesia ."

Other names: lip repositioning, gummy smile

Primary outcomes

  1. Change in Gingival Display (mm)

    Time frame: Up to 9 months

    Gingival display will be assessed in millimeters using standardized clinical photographs taken at maximum smile. Measurements will be performed using a periodontal probe to determine the vertical distance between the inferior border of the upper lip and the gingival margin of the maxillary central incisors. A reduction in gingival display indicates improvement, while an increase indicates relapse. Measurements will be recorded at baseline and during follow-up visits.

Secondary outcomes

  1. Pain score

    Time frame: Up to 9 months

    Postoperative pain will be assessed using a Visual Analog Scale (VAS) ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst pain imaginable. Lower scores indicate less pain.

  2. Patient Satisfaction Score

    Time frame: Up to 9 months

    Patient satisfaction will be evaluated using a numerical rating scale from 0 to 10, where 0 indicates complete dissatisfaction and 10 indicates maximum satisfaction. Higher scores indicate greater satisfaction.

  3. Signs of infection

    Time frame: Up to 9 months

    Postoperative infection will be assessed clinically based on the presence of signs such as redness, swelling, pain, discharge, or delayed healing at the surgical site. The outcome will be recorded as present or absent.

  4. Surgical Time

    Time frame: During surgery

    Surgical time will be measured in minutes from the initial incision to the completion of wound closure. Shorter surgical time indicates a more efficient procedure.

Sponsors and collaborators

Lead sponsor

Suez Canal University

Other

Registry information

Official study title

Assessment of Modified Lip Repositioning Surgery and Z Plasty Frenectomy for Treatment of Excessive Gingival Display

Important dates

Study start
2024
Primary completion
2025
Study completion
2025
First posted
Jan 12, 2026
Registry last updated
Jan 12, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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