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CompletedNCT01986959Updated Nov 19, 2013

Periodontal Dressing After Surgical Crown Lengthening

A Phase 2 interventional study of With Periodontal dressing and Without Periodontal dressing in Pain, Wound Healing Disturbance of and Periodontal Infection, sponsored by Franciscan University Center. Completed at 1 site in Brazil. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2013-11-19.

Sponsored by Franciscan University Center · Phase 2, Interventional, and Prevention

Phase
Phase 2
Study type
Interventional
Enrollment
37
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Background: There is controversy regarding the postoperative effects of periodontal dressing on the periodontium, pain and discomfort. The aim of the present study was to compare postoperative pain following surgical crown lengthening with and without the use of periodontal dressing.

Material and Methods: A blind, randomized, clinical trial was carried out with 36 patients. Following surgical crown lengthening, the individuals were randomly allocated to the periodontal dressing group (PDG) and control group (CG - non-placement of periodontal dressing). Pain and discomfort were analyzed using a visual analog scale (VAS), verbal scale (VS) and the number of analgesics consumed in seven days postoperatively. Postoperative infection, stability of the gingival margin and type of healing were also evaluated.

02

Conditions studied

  • Pain
  • Wound Healing Disturbance of
  • Periodontal Infection

Keywords

  • Periodontal Dressings
  • Surgical crown lengthening
  • Periodontal surgery
03

In context

Lead sponsor

Franciscan University Center is the lead sponsor of 4 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • need for surgical crown lengthening on only one tooth with need for proximal osteotomy;
  • aged 18 years or older;
  • absence of systemic disease;
  • absence of periodontal disease at the site of surgical crown lengthening;
  • no restrictions regarding the procedure;
  • no need for antimicrobial prophylaxis.

Exclusion criteria

Exclusion Criteria:

  • failure to return for the postoperative evaluations;
  • failure to fill out the charts correctly;
  • occurrence of pulp alteration in the operated tooth following the procedure;
  • occurrence of partial or total loss of the periodontal dressing;
  • allergic reaction to periodontal dressing.
05

Study design

Phase
Phase 2
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Investigator)
Enrollment
37 participants (actual)

Study arms

  • Experimental
    Surgery with Periodontal dressing

    After the Surgical crown lengthening, the patients were randomly allocated to the periodontal dressing group (PDG) and control group (CG - non-placement of periodontal dressing).

    Procedure: With Periodontal dressing

  • Other
    Surgery without Periodontal dressing

    After surgery, the patients were randomly allocated to the periodontal dressing group (PDG) and control group (CG - non-placement of periodontal dressing).

    Procedure: Without Periodontal dressing

Interventions

  • ProcedureWith Periodontal dressing

    After surgery,the dressing was mixed with a sterile spatula on a sterile glass plate following the manufacturer's instructions (2 cm of each paste measured with a sterile endodontic ruler). Coe-PakTM Regular was the dressing employed. Mixing and placement were performed only by the specialists in periodontics to ensure standardization. The dressing was inserted into the surgical wounds and molded to the necessary shape after setting sufficiently. The removal of the periodontal dressing was done after seven days.

    Also known as: Coe-PakTM Regular (GC AMERICA INC, Alsip, IL, USA)

  • ProcedureWithout Periodontal dressing

    The dressing was not inserted.

06

What researchers measure

Primary outcomes

  1. Position of the gingival margin

    Following removal of the dressing, the examiner determined the position of the gingival margin. This position was determined individually using the same procedure performed in the immediate postoperative period based on the previously recorded fixed reference points. The determination of gingival recession, position of the gingival margin and gingival swelling was performed categorically, using the gingival margin in the immediate postoperative period for comparison.

    Time frame: Seven days

Secondary outcomes

  1. Local infection

    Infection was defined as present if the patient has at the surgical site, postoperative pain around the site, which increased in intensity at any time between 1 and 3 days after the procedure, with or without the presence of halitosis.

    Time frame: seven Days

  2. Healing

    The healing of the surgical wound was evaluated based on the type of migration of the free edges of epithelium. Healing by first intention was determined by the migration of the epithelium toward the bed of the wound. Cases in which an area of conjunctive tissue and/or bone was uncovered by epithelium and re-epithelialization by the adjacent epithelium was occurring were classified as healing by second intention

    Time frame: Seven Days

  3. Pain and discomfort

    A questionnaire for the evaluation of pain and sensitivity on the first, second, third and seventh days postoperatively was given to each patient to fill out at home. All evaluations involved a record of the number of analgesics taken as well as a visual analog scale (VAS, ranging from 0 \[absence of pain\] to 100 \[unbearable pain\] mm) and a verbal scale (VS) with the following responses: no pain; mild pain; moderate pain; severe pain; and very severe pain. The patients were instructed to fill out the scales between 8 and 9 pm every day. Following removal of the dressing, in seven days, the examiner administered the pain scales (VAS and VS).

    Time frame: Seven days

  4. Gingival bleeding

    Following removal of the dressing, the examiner determined the presence of gingival bleeding as present or absent (Ainamo and Bay, 1975.

    Time frame: Seven days

07

Study locations

1 site
  • School of Dentistry, Franciscan University Center
    Santa Maria, RS 97010-491, Brazil
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 19, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01986959
Lead sponsor
Franciscan University Center
Responsible party
Raquel Pippi Antoniazzi (MS, Professor, School of Dentistry, Franciscan University Center (UNIFRA), Santa Maria, RS, Brazil;, Franciscan University Center) — Principal investigator
First posted
Nov 19, 2013
Start date
Sep 2011
Primary completion
Oct 2012
Completion
Oct 2012
Last update
Nov 19, 2013

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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