Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

Study on Regenerative Treatment of Intra-bony Defects

This study has been completed.
Information provided by (Responsible Party):
Technische Universität Dresden Identifier:
First received: September 22, 2008
Last updated: January 16, 2012
Last verified: January 2012
The aim of this investigation is to determine whether a synthetic hydroxyapatite is as effective as an enamel matrix protein for periodontal regeneration in patients who have intra-bony periodontal defects.

Condition Intervention Phase
Periodontal Disease
Periodontal Attachment Loss
Device: Ostim
Device: Emdogain
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single Blind (Investigator)
Primary Purpose: Treatment
Official Title: Randomised, Clinical Controlled Study on Treatment of Intra-bony Defects With Enamel Matrix Protein (Emdogain®) vs. Nanocrystalline Hydroxyapatite (Ostim®)

Resource links provided by NLM:

Further study details as provided by Technische Universität Dresden:

Primary Outcome Measures:
  • Amount of bone fill after surgery [ Time Frame: 12 months ]

Secondary Outcome Measures:
  • Clinical attachment level gain and reduction of probing pocket depth [ Time Frame: 6 and 12 months ]

Enrollment: 56
Study Start Date: August 2008
Study Completion Date: January 2012
Primary Completion Date: January 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1 Device: Ostim
Ostim® is synthetically manufactured and comprises nanocrystalline hydroxyapatite. The small particle size facilitates resorption. Ostim is an aqueous watery paste and can be used to fill bone defects or to build up bony structures in the region of the jaws. Ostim is osteoconductive, facilitating bone growth. It will act as a scaffolding for the new bone. Ostim is absorbed during the healing process, in the beginning it is osseously interweaved and finally replaced by natural bone.
Other Name: synthetic hydroxyapatite
Active Comparator: 2 Device: Emdogain
Emdogain® consists of sterile lyophilised Enamel Matrix Derivative with sterile aqueous solution of Propylene Glycol Alginate, 30 mg/ml.
Other Name: enamel matrix protein

Detailed Description:

Regeneration of periodontal tissues that have been diminished by periodontal disease is the main goal of periodontal therapy. While conventional surgical therapy only offers limited potential towards recovering tooth-supporting tissues, more recently developed techniques lead to a greater and more predictable regeneration of the periodontal structures. Among these techniques, application of enamel matrix proteins or bone grafts can promote periodontal regeneration.

The study is a prospective, controlled, mono-center, randomized, clinical trial, that is open to the operator, blinded to the examiner. It will be conducted in a parallel group design. Participants who have at least 1 intra-bony periodontal defect will receive regenerative surgery at baseline with the randomly selected devices. A newly developed synthetically manufactured bone grafting material made of hydroxyapatite (Ostim) will be the product under investigation. An enamel matrix protein derivative (Emdogain) will act as control device. Both materials will be applied in intra-bony defects during periodontal flap surgery. Follow-ups will take place at 7 and 14 days post surgery, and at 3, 6, 9, and 12 months.

The primary aim is to compare the effectiveness of the test product with the control in the treatment of 1- and 2-wall intrabony periodontal defects on the amount of bone fill 12 months after surgery. Secondary parameters will be the clinical attachment level gain and reduction of probing pocket depth at 6 and 12 months.


Ages Eligible for Study:   18 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Males and females aged between 18 and 70 years.
  • Presence of at least one 1- or 2-wall intrabony periodontal defect.
  • Defect width at least 2 mm.
  • Defect depth at least 4 mm.
  • Defect located at a single rooted tooth or at the approximal site of a multi-rooted tooth if the tooth is not affected by a furcation involvement.
  • Written informed consent.
  • Subject must be judged healthy by the investigator at the time of surgery.
  • Subjects must have had a plaque index < 0.8 at the end of the initial periodontal therapy.

Exclusion Criteria:

  • Medical conditions required prolonged use of steroids.
  • Standard blood tests performed by the medical practitioner showing leukocyte dysfunction and deficiencies.
  • History of haemophilia, bleeding disorders, or cumarin therapy.
  • History of neoplastic disease requiring the use of chemotherapy.
  • History of radiation therapy of the head and neck.
  • History of renal failure or chronic renal diseases.
  • Chronic liver diseases.
  • Severe or uncontrolled metabolic bone disorders.
  • Uncontrolled endocrine disorders (including diabetes).
  • Current pregnancy at the time of recruitment.
  • Physical handicaps that would interfere with the ability to perform adequate oral hygiene.
  • Use of any investigational drug or device within the 90 day period prior to surgery on study day 0.
  • Alcoholism or chronical drug abuse.
  • Immuno-compromised patients (including HIV).
  • Smokers (occasional smoking is allowed).
  • Conditions or circumstances , in the opinion of the investigator, that could represent a general contra-indication for surgical procedures or would prevent completion of study participation or interfere with analysis of study results, such as a history of non-compliance, or unreliability.
  • Local inflammation.
  • Mucosal diseases (e.g. erosive lichen planus).
  • History of local radiation therapy.
  • Presence of oral lesions (e.g. ulceration, malignancy).
  • Inadequate oral hygiene or patient who is unmotivated for home care.
  • Teeth with untreated endodontic or cariologic problems.
  • Defects that during surgery show deviation from the inclusion criteria.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00757159

Dresden University of Technology, Dental School, Department of Conservative Dentistry
Dresden, Germany, 01307
Sponsors and Collaborators
Technische Universität Dresden
Principal Investigator: Thomas Hoffmann, Prof. Technische Universität Dresden
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Technische Universität Dresden Identifier: NCT00757159     History of Changes
Other Study ID Numbers: ZER-PA_01-2008
Study First Received: September 22, 2008
Last Updated: January 16, 2012

Keywords provided by Technische Universität Dresden:
Periodontal disease
Enamel matrix protein

Additional relevant MeSH terms:
Periodontal Diseases
Gingival Diseases
Periodontal Attachment Loss
Mouth Diseases
Stomatognathic Diseases
Periodontal Atrophy processed this record on April 21, 2017