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CompletedNCT03127228Updated Nov 15, 2019Results posted

Laser-Assisted Regenerative Surgical Therapy for Peri-implantitis

An interventional study of Standard mechanical debridement and Er:YAG laser-assisted debridement in Peri-Implantitis, sponsored by University of Michigan. Completed at 1 site in United States. Open to participants aged 18 Years to 85 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-11-15.

Sponsored by University of Michigan · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
24
Allocation
Randomized
Ages
18 Years to 85 Years
Sex
All
01

Study summary

The purpose of the study is to evaluate if using Erbium-doped yttrium aluminium garnet laser, Erbium YAG laser (Er:YAG) laser could have adjunctive benefits to the conventional standard mechanical debridement to ablate the infected tissue around the dental implant and detoxify the contaminated implant surface for resolving peri-implant infection and enhance bone regeneration of peri-implant defects.

Read the detailed description

The purpose of the study is to evaluate if using Er:YAG laser could have adjunctive benefits to the conventional standard mechanical debridement to ablate the infected tissue around the dental implant and detoxify the contaminated implant surface for resolving peri-implant infection and enhance bone regeneration of peri-implant defects.

This study involves one center and a double-blinded randomized controlled clinical trial is planned. Twenty-four adult patients in the need of surgical treatment due to peri-implantitis will be included. Six visits are needed for each patient including a 24 week follow-up visit.

Specific Aim 1: To compare the clinical benefit of Er:YAG laser-assisted peri-implant defect debridement and surface detoxification with conventional mechanical debridement for regenerative therapy

Specific Aim 2: To evaluate whether Er:YAG laser-assisted regenerative surgical therapy can decrease bacterial load and alter microbial profile

Specific Aim 3: To analyze whether Er:YAG laser-assisted regenerative surgical therapy can impact the molecular profile of the peri-implant crevicular fluid (PICF) and the stability of the treatment

02

Conditions studied

  • Peri-Implantitis

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Keywords

  • Laser
03

In context

Peri-Implantitis

313 studies on the registry are indexed under Peri-Implantitis; 85 are open to participants now.

This study's enrollment of 24 is below the median of 40 across 191 interventional studies indexed under Peri-Implantitis.

Browse Peri-Implantitis studies →

Lead sponsor

University of Michigan is the lead sponsor of 1,503 studies on the registry; 189 are open to participants now.

Of its 167 completed or terminated interventional studies of FDA-regulated products, 132 (79%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 85 Years
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

  • Subjects, aged 18 - 85 years
  • Physical status according to the American Society of Anesthesiologists (ASA) I or II, which includes patients who are systemically healthy or suffer under mild to moderate, but well controlled systemic diseases.
  • Subjects having a minimum of 1 dental implant with peri-implantitis.
  • Dental implants with peri-implantitis ≥ 2 threads exposed (infrabony defect) identified on the radiograph and pocket probing depth (PPD) ≥ 5mm, with bleeding on probing (BOP) and/or suppuration (pus)
  • The implants are in function for at least 6 months
  • Only rough surface implant will be included in this study

Exclusion criteria

Exclusion Criteria:

  • Long-term use of antibiotics > 2 weeks in the past two months
  • Obvious malpositioning of the dental implants
  • Subjects taking medications known to modify bone metabolism (such as bisphosphonates, corticosteroids, Hormone replacement therapy for menopausal women, parathyroid hormone, Denosumab, strontium ranelate)
  • Pregnant females or those planning to become pregnant
  • Subjects with a history of major diseases, oral cancer, sepsis or those having adverse outcomes to oral procedures in the past, will be excluded
  • Mobility of dental implants
  • History of alcoholism or drug abuse
  • Current smokers
  • Diseases of the immune system or any medical condition that may influence the outcome (uncontrolled diabetes (HbA1c >8)
  • Uncontrolled systemic disease or condition known to alter bone metabolism, like Osteoporosis, Osteopenia, Hyperparathyroidism, Paget's disease

Premature Exclusion Criteria:

  • The researcher believes that it is not the best interest of the subject to stay in the study
  • If the subject becomes ineligible to participate based on the exclusion criteria
  • If the subject's medical condition requires interventions which preclude involvement in the study (radiation therapy, chemotherapy, etc)
  • If the subject does not follow study related instructions
  • The study is suspended or canceled.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
24 participants (actual)

Study arms

  • Other
    Standard mechanical debridement

    Debridement and surface detoxification of the implant surface and removal of the inflamed tissue with dental scalers.

    Other: Standard mechanical debridement

  • Experimental
    Er:YAG laser-assisted debridement

    Debridement and surface detoxification of the implant surface and removal of the inflamed tissue with the aid of the laser treatment.

    Other: Standard mechanical debridement · Device: Er:YAG laser-assisted debridement

Interventions

  • OtherStandard mechanical debridement

    Implantoplasty will be performed for peri-implant suprabony defect and infrabony defect will be debrided with dental scalers prior to bone grafting regenerative therapy

  • DeviceEr:YAG laser-assisted debridement

    Implantoplasty will be performed for peri-implant suprabony defect and infrabony defect will be debrided with the aid of the laser prior to bone grafting regenerative therapy

06

What researchers measure

Primary outcomes

  1. Change in Periodontal Probing Depths (PD)

    PD will be measured in millimeters. Change in PD measurements were calculated between baseline and 24 weeks.

    Time frame: Baseline and 24 Week

  2. Change in Clinical Attachment Level (CAL)

    CAL will be measured in millimeters. Change in subject CAL measurements were calculated between baseline and 24 weeks.

    Time frame: Baseline and 24 Week

  3. Change in Bleeding on Probing (BOP)

    BOP will be measured dichotomously as 0 or 1. Score 0=no bleeding present Score 1=bleeding present Change in subject BOP score was calculated between baseline and 24 weeks and reported as percent of sites with BOP.

    Time frame: Baseline and 24 Week

  4. Change in Radiographic Bone Fill (RBF)

    Peri-implant bony defect change will be measured compared to baseline. Participants' standardized radiographs were used to determine bone level changes between baseline and 24 weeks.

    Time frame: Baseline and 24 Week

07

Results

Posted Nov 1, 2019

Participant flow

Participant flow — Overall Study
MilestoneStandard Mechanical DebridementEr:YAG Laser-assisted Debridement
Started1212
Completed1212
Not completed00

Outcome measures

PrimaryChange in Periodontal Probing Depths (PD)

PD will be measured in millimeters. Change in PD measurements were calculated between baseline and 24 weeks.

Time frame:
Baseline and 24 Week
Reported as:
Mean · millimeters
Change in Periodontal Probing Depths (PD)
millimetersStandard Mechanical DebridementEr:YAG Laser-assisted Debridement
Change in Periodontal Probing Depths (PD)1.85 ± 1.712.65 ± 2.14
PrimaryChange in Clinical Attachment Level (CAL)

CAL will be measured in millimeters. Change in subject CAL measurements were calculated between baseline and 24 weeks.

Time frame:
Baseline and 24 Week
Reported as:
Mean · millimeters
Change in Clinical Attachment Level (CAL)
millimetersStandard Mechanical DebridementEr:YAG Laser-assisted Debridement
Change in Clinical Attachment Level (CAL)1.47 ± 1.761.90 ± 2.28
PrimaryChange in Bleeding on Probing (BOP)

BOP will be measured dichotomously as 0 or 1. Score 0=no bleeding present Score 1=bleeding present Change in subject BOP score was calculated between baseline and 24 weeks and reported as percent of sites with BOP.

Time frame:
Baseline and 24 Week
Reported as:
Mean · percentage of sites with BOP
Change in Bleeding on Probing (BOP)
percentage of sites with BOPStandard Mechanical DebridementEr:YAG Laser-assisted Debridement
Change in Bleeding on Probing (BOP)-0.39 ± 0.55-0.31 ± 0.62
PrimaryChange in Radiographic Bone Fill (RBF)

Peri-implant bony defect change will be measured compared to baseline. Participants' standardized radiographs were used to determine bone level changes between baseline and 24 weeks.

Time frame:
Baseline and 24 Week
Reported as:
Mean · Millimeters
Change in Radiographic Bone Fill (RBF)
MillimetersStandard Mechanical DebridementEr:YAG Laser-assisted Debridement
Change in Radiographic Bone Fill (RBF)1.08 ± 1.041.27 ± 1.14

Adverse events

Collected over 6 months. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Standard Mechanical Debridement0/12 (0%)0/12 (0%)6/12 (50%)
Er:YAG Laser-assisted Debridement0/12 (0%)0/12 (0%)3/12 (25%)
Most frequent other events
Showing 10 of 12
Most frequent other events
EventStandard Mechanical DebridementEr:YAG Laser-assisted Debridement
Sinus Tract InfectionRespiratory, thoracic and mediastinal disorders1/120/12
Tooth painGeneral disorders1/120/12
FluInfections and infestations1/120/12
Jaw discomfortGeneral disorders1/120/12
Broken fillingGeneral disorders0/121/12
Shoulder PainInjury, poisoning and procedural complications1/120/12
FistulaInfections and infestations1/120/12
Ulcer on earEar and labyrinth disorders1/120/12
Residual sutureGeneral disorders0/121/12
ShinglesImmune system disorders0/121/12

Baseline characteristics

Age, Continuous
Age, Continuous(years)Standard Mechanical DebridementEr:YAG Laser-assisted DebridementTotal
Mean63.41 ± 13.4866.41 ± 8.7664.91 ± 11.22
Sex: Female, Male
Sex: Female, Male(Participants)Standard Mechanical DebridementEr:YAG Laser-assisted DebridementTotal
Female5510
Male7714
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)Standard Mechanical DebridementEr:YAG Laser-assisted DebridementTotal
Count of participants——0
Region of Enrollment
Region of Enrollment(participants)Standard Mechanical DebridementEr:YAG Laser-assisted DebridementTotal
United States121224
08

Study locations

1 site
  • University of Michigan School of Dentistry
    Ann Arbor, Michigan 48104, United States
09

References and documents

Publications

  • Aljateeli M, Fu JH, Wang HL. Managing peri-implant bone loss: current understanding. Clin Implant Dent Relat Res. 2012 May;14 Suppl 1:e109-18. doi: 10.1111/j.1708-8208.2011.00387.x. Epub 2011 Oct 10. PubMed 21985674 ↗
  • Aoki A, Mizutani K, Schwarz F, Sculean A, Yukna RA, Takasaki AA, Romanos GE, Taniguchi Y, Sasaki KM, Zeredo JL, Koshy G, Coluzzi DJ, White JM, Abiko Y, Ishikawa I, Izumi Y. Periodontal and peri-implant wound healing following laser therapy. Periodontol 2000. 2015 Jun;68(1):217-69. doi: 10.1111/prd.12080. PubMed 25867988 ↗
  • Atieh MA, Alsabeeha NH, Faggion CM Jr, Duncan WJ. The frequency of peri-implant diseases: a systematic review and meta-analysis. J Periodontol. 2013 Nov;84(11):1586-98. doi: 10.1902/jop.2012.120592. Epub 2012 Dec 13. PubMed 23237585 ↗
  • Claffey N, Clarke E, Polyzois I, Renvert S. Surgical treatment of peri-implantitis. J Clin Periodontol. 2008 Sep;35(8 Suppl):316-32. doi: 10.1111/j.1600-051X.2008.01277.x. PubMed 18724859 ↗
  • De Bruyn H, Vandeweghe S, Ruyffelaert C, Cosyn J, Sennerby L. Radiographic evaluation of modern oral implants with emphasis on crestal bone level and relevance to peri-implant health. Periodontol 2000. 2013 Jun;62(1):256-70. doi: 10.1111/prd.12004. PubMed 23574471 ↗
  • Derks J, Tomasi C. Peri-implant health and disease. A systematic review of current epidemiology. J Clin Periodontol. 2015 Apr;42 Suppl 16:S158-71. doi: 10.1111/jcpe.12334. PubMed 25495683 ↗
  • Fransson C, Lekholm U, Jemt T, Berglundh T. Prevalence of subjects with progressive bone loss at implants. Clin Oral Implants Res. 2005 Aug;16(4):440-6. doi: 10.1111/j.1600-0501.2005.01137.x. PubMed 16117768 ↗
  • Goncalves F, Zanetti AL, Zanetti RV, Martelli FS, Avila-Campos MJ, Tomazinho LF, Granjeiro JM. Effectiveness of 980-mm diode and 1064-nm extra-long-pulse neodymium-doped yttrium aluminum garnet lasers in implant disinfection. Photomed Laser Surg. 2010 Apr;28(2):273-80. doi: 10.1089/pho.2009.2496. PubMed 19811080 ↗
  • Jensen MP, Karoly P, O'Riordan EF, Bland F Jr, Burns RS. The subjective experience of acute pain. An assessment of the utility of 10 indices. Clin J Pain. 1989 Jun;5(2):153-9. doi: 10.1097/00002508-198906000-00005. PubMed 2520397 ↗
  • Kinney JS, Morelli T, Oh M, Braun TM, Ramseier CA, Sugai JV, Giannobile WV. Crevicular fluid biomarkers and periodontal disease progression. J Clin Periodontol. 2014 Feb;41(2):113-120. doi: 10.1111/jcpe.12194. Epub 2013 Dec 12. PubMed 24303954 ↗
  • Kreisler M, Kohnen W, Marinello C, Gotz H, Duschner H, Jansen B, d'Hoedt B. Bactericidal effect of the Er:YAG laser on dental implant surfaces: an in vitro study. J Periodontol. 2002 Nov;73(11):1292-8. doi: 10.1902/jop.2002.73.11.1292. PubMed 12479633 ↗
  • Marrone A, Lasserre J, Bercy P, Brecx MC. Prevalence and risk factors for peri-implant disease in Belgian adults. Clin Oral Implants Res. 2013 Aug;24(8):934-40. doi: 10.1111/j.1600-0501.2012.02476.x. Epub 2012 May 3. PubMed 22551347 ↗
  • Matys J, Dominiak M. Assessment of Pain When Uncovering Implants with Er:YAG Laser or Scalpel for Second Stage Surgery. Adv Clin Exp Med. 2016 Nov-Dec;25(6):1179-1184. doi: 10.17219/acem/62456. PubMed 28028971 ↗
  • Nevins M, Nevins ML, Yamamoto A, Yoshino T, Ono Y, Wang CW, Kim DM. Use of Er:YAG laser to decontaminate infected dental implant surface in preparation for reestablishment of bone-to-implant contact. Int J Periodontics Restorative Dent. 2014 Jul-Aug;34(4):461-6. doi: 10.11607/prd.2192. PubMed 25006763 ↗
  • Peri-implant mucositis and peri-implantitis: a current understanding of their diagnoses and clinical implications. J Periodontol. 2013 Apr;84(4):436-43. doi: 10.1902/jop.2013.134001. No abstract available. PubMed 23537178 ↗
  • Quaranta A, Maida C, Scrascia A, Campus G, Quaranta M. Er:Yag Laser application on titanium implant surfaces contaminated by Porphyromonas gingivalis: an histomorphometric evaluation. Minerva Stomatol. 2009 Jul-Aug;58(7-8):317-30. English, Italian. PubMed 19633633 ↗
  • Renvert S, Roos-Jansaker AM, Claffey N. Non-surgical treatment of peri-implant mucositis and peri-implantitis: a literature review. J Clin Periodontol. 2008 Sep;35(8 Suppl):305-15. doi: 10.1111/j.1600-051X.2008.01276.x. PubMed 18724858 ↗
  • Schwarz F, Hegewald A, John G, Sahm N, Becker J. Four-year follow-up of combined surgical therapy of advanced peri-implantitis evaluating two methods of surface decontamination. J Clin Periodontol. 2013 Oct;40(10):962-7. doi: 10.1111/jcpe.12143. Epub 2013 Aug 12. PubMed 23931259 ↗
  • Schwarz F, Sahm N, Iglhaut G, Becker J. Impact of the method of surface debridement and decontamination on the clinical outcome following combined surgical therapy of peri-implantitis: a randomized controlled clinical study. J Clin Periodontol. 2011 Mar;38(3):276-84. doi: 10.1111/j.1600-051X.2010.01690.x. Epub 2011 Jan 11. PubMed 21219392 ↗
  • Suarez-Lopez Del Amo F, Yu SH, Wang HL. Non-Surgical Therapy for Peri-Implant Diseases: a Systematic Review. J Oral Maxillofac Res. 2016 Sep 9;7(3):e13. doi: 10.5037/jomr.2016.7313. eCollection 2016 Jul-Sep. PubMed 27833738 ↗
  • Takasaki AA, Aoki A, Mizutani K, Kikuchi S, Oda S, Ishikawa I. Er:YAG laser therapy for peri-implant infection: a histological study. Lasers Med Sci. 2007 Sep;22(3):143-57. doi: 10.1007/s10103-006-0430-x. Epub 2007 Jan 12. PubMed 17219255 ↗
  • Wang HL, Garaicoa-Pazmino C, Collins A, Ong HS, Chudri R, Giannobile WV. Protein biomarkers and microbial profiles in peri-implantitis. Clin Oral Implants Res. 2016 Sep;27(9):1129-36. doi: 10.1111/clr.12708. Epub 2015 Oct 1. PubMed 26424287 ↗
  • Yamamoto A, Tanabe T. Treatment of peri-implantitis around TiUnite-surface implants using Er:YAG laser microexplosions. Int J Periodontics Restorative Dent. 2013 Jan-Feb;33(1):21-30. doi: 10.11607/prd.1593. PubMed 23342343 ↗
  • Wang CW, Di Gianfilippo R, Kaciroti N, Ou A, Feng SW, Wang HL. Stability of peri-implantitis surgical reconstructive therapy-a (> 2 years) follow-up of a randomized clinical trial. Clin Oral Investig. 2023 Dec 26;28(1):30. doi: 10.1007/s00784-023-05457-6. PubMed 38147180 ↗
  • Wang CW, Ashnagar S, Gianfilippo RD, Arnett M, Kinney J, Wang HL. Laser-assisted regenerative surgical therapy for peri-implantitis: A randomized controlled clinical trial. J Periodontol. 2021 Mar;92(3):378-388. doi: 10.1002/JPER.20-0040. Epub 2020 Aug 25. PubMed 32761810 ↗

Study documents

  • Protocol and statistical analysis plan · Feb 22, 2018

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: Undecided

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 15, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03127228
Collaborators
Morita J USA
Responsible party
Chin-Wei Wang (Clinical Assistant Professor, University of Michigan) — Principal investigator
First posted
Apr 25, 2017
Start date
Jun 26, 2017
Primary completion
Nov 2, 2018
Completion
Nov 2, 2018
Results posted
Nov 1, 2019
Last update
Nov 15, 2019

Study contacts

Jeff (Chin-Wei) Wang, DDS, DMSc
principal investigator · Department of Periodontics and Oral Medicine University of Michigan School of Dentistry

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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