ClinicalTrials.gg
CompletedNCT01522131Updated Jun 12, 2014Results posted

Effect of Laser Use on Guided Tissue Regeneration in Treatment of Molar Teeth With Class 2 Furcation Affected by Periodontitis

An interventional study of bioresorbable membrane alonewill be used for regeneration of the periodontium(control) in Furcation Defects, Periodontitis and Alveolar Bone Loss Beyond Furcation, sponsored by The University of Texas Health Science Center, Houston. Completed at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2014-06-12.

Sponsored by The University of Texas Health Science Center, Houston · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
33
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Purpose: The proposed study will evaluate and compare the clinical response of using bioresorbable collagen membrane alone or defect debridement with erbium Laser irradiation in conjunction with bioresorbable collagen membrane in the treatment of Class II furcation defects in maxillary and mandibular teeth. The study will examine whether there is a superior regeneration potential when the laser energy is combined with membrane defect isolation.

Procedure: The study will use 2 groups, a control group and a test group with 16 patients in each group, with severe chronic periodontitis having clinical or radiographic evidence of Class II furcation defects in the buccal or lingual of the mandibular molars or Class II furcation defects on the buccal of maxillary molars. 16 patients will serve as the control group and open flap debridement with bioresorbable collagen membrane will be the mode of treatment. Group 2: 16 patients will serve as the test group and will undergo open flap debridement in conjunction with Er, Cr: YSGG laser irradiation and a bioresorbable collagen membrane will be used.

Read the detailed description

All subjects will be patients of record in the Graduate Periodontics clinic at the UT School of Dentistry. These individuals will have already been diagnosed with chronic periodontitis and require surgical intervention to treat the disease process. All patients will have received initial periodontal therapy consisting of oral hygiene instructions and scaling and root planing. Once enrolled in the study, all subjects will receive surgical therapy involving opened flap debridement of the affected furcation defects along with membrane isolation of the defect. The test group will have debridement performed with the Er,Cr:YSGG laser and ultrasonic cleansing, while the control group will have hand instrumentation along with ultrasonic cleansing. This procedure will take approximately 1.5 hours. Postoperative appointments at 1,2,4,8 weeks requiring 15-30 minutes per appointment; at 3 months for periodontal maintenance and reinforcement of home care requiring 45 minutes; and at 6 months for periodontal maintenance, reassessment of the furcation defect and correction of residual defects requiring 75 minutes. Patients will be exited from the study 2 weeks after the last maintenance appointment and placed on recall with the Department of Periodontics dental hygienist. The total time commitment for each patient is 6 months.

02

Conditions studied

  • Furcation Defects
  • Periodontitis
  • Alveolar Bone Loss Beyond Furcation

Keywords

  • bioresorbable membrane
03

In context

Furcation Defects

42 studies on the registry are indexed under Furcation Defects; 13 are open to participants now.

This study's enrollment of 33 is above the median of 27 across 38 interventional studies indexed under Furcation Defects.

Browse Furcation Defects studies →

Lead sponsor

The University of Texas Health Science Center, Houston is the lead sponsor of 897 studies on the registry; 214 are open to participants now.

Of its 173 completed or terminated interventional studies of FDA-regulated products, 142 (82%) have results posted.

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

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • should be 18 years of age in good general health
  • should exhibit an O'Leary plaque score of 20% or less after initial therapy
  • class II furcations defects should be present in the buccal of the maxillary molars or buccal or lingual of the mandibular molars
  • tooth mobility should not exceed Miller Class II

Exclusion criteria

Exclusion Criteria:

  • patients who will be excluded include those with known or allergy to chlorhexidine,
  • uncontrolled diabetics,
  • patients who are ,
  • who have taken within 6 months of study enrollment,
  • individuals who are pregnant and heavy smokers (> 10 cigarettes/day)
Terms in these criteria, in plain language(3)

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Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

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Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

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05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
33 participants (actual)

Study arms

  • Other
    Bioresorbable membrane will be used as the control

    Bioresorbable membrane alone (control)

    Procedure: bioresorbable membrane alonewill be used for regeneration of the periodontium(control)

  • Experimental
    laser with bioresorabable membrane (test)

    Procedure: bioresorbable membrane alonewill be used for regeneration of the periodontium(control)

Interventions

  • Procedurebioresorbable membrane alonewill be used for regeneration of the periodontium(control)

    bioresorbable membrane with laser will be used for regeneration of the periodontium(test)

06

What researchers measure

Primary outcomes

  1. Change in Clinical Attachment( Gain or Loss) Measured by Horizontal Clinical Attachment Loss(in mm) From Baseline to 6 Months.

    Patients with periodontitis lose bone and clinical attachment over a period of time. In both control and test a Nabers probe( curved probe) marked in mm was used to quantify this loss or gain of clinical attachment in a horizontal direction from the cemento-enamel junction to the the most apical extent of the bone at the furcation entrance at baseline and after 6months after the procedure. These measurements were done intrasurgery and before opening of the flaps,again both at initial visit and 6 months after the procedure was done. This measurement will be measured in mm in postive numbers and then will be compared to measurements ( in mm) at intial and baseline. If there is a loss in attachment it will be denoted by negative number. If theres a gain in attachment it will be denoted by a positive number after the comparison.

    Time frame: At Baseline and 6 months

Secondary outcomes

  1. Clinical Evidence of Regeneration of Class 2 Furcation Defects Based on Changes in Vertical Pocket Depth Measurement(in mm)

    Patients with periodontitis lose bone and clinical attachment over a period of time in vertical direction also. In both control and test a UNC probe marked in mm was used to quantify this loss or gain of clinical attachment in a vertical direction from the cemento-enamel junction to the most apical extent of the bone at the furcation entrance at baseline and after 6months after the procedure. These measurements were done intrasurgery and before opening of the flaps,again both at initial visit and 6 months after the procedure was done.This measurement will be measured in mm in postive numbers and then will be compared to measurements ( in mm) at intial and baseline. Increase and decrease of vertical probing depth will be noted by a positive number.

    Time frame: At Baseline and 6 months

07

Results

Posted Jun 12, 2014

Participant flow

Participant flow — Overall Study
MilestoneBioresorbable Membrane Will be Used as the ControlLaser With Bioresorabable Membrane (Test)
Started1617
Completed1417
Not completed20

Outcome measures

PrimaryChange in Clinical Attachment( Gain or Loss) Measured by Horizontal Clinical Attachment Loss(in mm) From Baseline to 6 Months.

Patients with periodontitis lose bone and clinical attachment over a period of time. In both control and test a Nabers probe( curved probe) marked in mm was used to quantify this loss or gain of clinical attachment in a horizontal direction from the cemento-enamel junction to the the most apical extent of the bone at the furcation entrance at baseline and after 6months after the procedure. These measurements were done intrasurgery and before opening of the flaps,again both at initial visit and 6 months after the procedure was done. This measurement will be measured in mm in postive numbers and then will be compared to measurements ( in mm) at intial and baseline. If there is a loss in attachment it will be denoted by negative number. If theres a gain in attachment it will be denoted by a positive number after the comparison.

Time frame:
At Baseline and 6 months
Reported as:
Mean · mm
Change in Clinical Attachment( Gain or Loss) Measured by Horizontal Clinical Attachment Loss(in mm) From Baseline to 6 Months.
mmBioresorbable Membrane Will be Used as the ControlLaser With Bioresorabable Membrane (Test)
Change in Clinical Attachment( Gain or Loss) Measured by Horizontal Clinical Attachment Loss(in mm) From Baseline to 6 Months.-.82 ± 1.54-1.26 ± 1.96
SecondaryClinical Evidence of Regeneration of Class 2 Furcation Defects Based on Changes in Vertical Pocket Depth Measurement(in mm)

Patients with periodontitis lose bone and clinical attachment over a period of time in vertical direction also. In both control and test a UNC probe marked in mm was used to quantify this loss or gain of clinical attachment in a vertical direction from the cemento-enamel junction to the most apical extent of the bone at the furcation entrance at baseline and after 6months after the procedure. These measurements were done intrasurgery and before opening of the flaps,again both at initial visit and 6 months after the procedure was done.This measurement will be measured in mm in postive numbers and then will be compared to measurements ( in mm) at intial and baseline. Increase and decrease of vertical probing depth will be noted by a positive number.

Time frame:
At Baseline and 6 months
Reported as:
Mean · mm
Clinical Evidence of Regeneration of Class 2 Furcation Defects Based on Changes in Vertical Pocket Depth Measurement(in mm)
mmBioresorbable Membrane Will be Used as the ControlLaser With Bioresorabable Membrane (Test)
Clinical Evidence of Regeneration of Class 2 Furcation Defects Based on Changes in Vertical Pocket Depth Measurement(in mm)-.79 ± 125-.88 ± 121

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Bioresorbable Membrane Will be Used as the Control—0/14 (0%)0/14 (0%)
Laser With Bioresorabable Membrane (Test)—0/17 (0%)0/17 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Bioresorbable Membrane Will be Used as the ControlLaser With Bioresorabable Membrane (Test)Total
<=18 years000
Between 18 and 65 years131427
>=65 years134
Sex: Female, Male
Sex: Female, Male(Participants)Bioresorbable Membrane Will be Used as the ControlLaser With Bioresorabable Membrane (Test)Total
Female81220
Male6511
Region of Enrollment
Region of Enrollment(participants)Bioresorbable Membrane Will be Used as the ControlLaser With Bioresorabable Membrane (Test)Total
United States141731
08

Study locations

1 site
  • School of Dentistry ,Department of Periodontics,The University of Texas Health Science Center, Houston
    Houston, Texas 77030, United States
09

References and documents

Publications

  • Gaspirc B, Skaleric U. Clinical evaluation of periodontal surgical treatment with an Er:YAG laser: 5-year results. J Periodontol. 2007 Oct;78(10):1864-71. doi: 10.1902/jop.2007.070054. PubMed 18062108 ↗
  • Crespi R, Romanos GE, Cassinelli C, Gherlone E. Effects of Er:YAG laser and ultrasonic treatment on fibroblast attachment to root surfaces: an in vitro study. J Periodontol. 2006 Jul;77(7):1217-22. doi: 10.1902/jop.2006.050416. PubMed 16805685 ↗
  • Pontoriero R, Lindhe J, Nyman S, Karring T, Rosenberg E, Sanavi F. Guided tissue regeneration in degree II furcation-involved mandibular molars. A clinical study. J Clin Periodontol. 1988 Apr;15(4):247-54. doi: 10.1111/j.1600-051x.1988.tb01578.x. PubMed 3164333 ↗
  • Lekovic V, Kenney EB, Carranza FA Jr, Danilovic V. Treatment of class II furcation defects using porous hydroxylapatite in conjunction with a polytetrafluoroethylene membrane. J Periodontol. 1990 Sep;61(9):575-8. doi: 10.1902/jop.1990.61.9.575. PubMed 2170618 ↗
  • Ishikawa I, Aoki A, Takasaki AA, Mizutani K, Sasaki KM, Izumi Y. Application of lasers in periodontics: true innovation or myth? Periodontol 2000. 2009;50:90-126. doi: 10.1111/j.1600-0757.2008.00283.x. No abstract available. PubMed 19388956 ↗
  • Derdilopoulou FV, Nonhoff J, Neumann K, Kielbassa AM. Microbiological findings after periodontal therapy using curettes, Er:YAG laser, sonic, and ultrasonic scalers. J Clin Periodontol. 2007 Jul;34(7):588-98. doi: 10.1111/j.1600-051X.2007.01093.x. PubMed 17555412 ↗
  • Melcher AH. On the repair potential of periodontal tissues. J Periodontol. 1976 May;47(5):256-60. doi: 10.1902/jop.1976.47.5.256. No abstract available. PubMed 775048 ↗
  • Darley M. Students in Sweden. Nurs Stand (1984). 1984 Nov 22;(374):8. No abstract available. PubMed 6568444 ↗
10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 12, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT01522131
Responsible party
Rosemary Thomas (Resident,Department of Periodontics ,School of Dentistry, The University of Texas Health Science Center, Houston) — Principal investigator
First posted
Jan 31, 2012
Start date
Dec 2011
Primary completion
Jun 2013
Completion
Jun 2013
Results posted
Jun 12, 2014
Last update
Jun 12, 2014

Study contacts

Robin L Weltman, DDS,MSD
study director · School of Dentistry ,Department of Periodontics,The University of Texas Health Science Center, Houston
Robin L Weltman, DDS,MSD
study chair · School of Dentistry ,Department of Periodontics,The University of Texas Health Science Center, Houston

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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