Tissue Characterization in Teeth Treated With a Regeneration Protocol

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Kenneth Hargreaves, The University of Texas Health Science Center at San Antonio
ClinicalTrials.gov Identifier:
NCT00881907
First received: April 14, 2009
Last updated: March 26, 2014
Last verified: March 2014

April 14, 2009
March 26, 2014
March 2010
March 2014   (final data collection date for primary outcome measure)
The primary outcome measure will be histological identification of mineralized tissue and adherent cells in the apical third of these teeth. [ Time Frame: three year ] [ Designated as safety issue: No ]
The primary outcome measure will be histological identification of mineralized tissue and adherent cells in the apical third of these teeth. [ Time Frame: one year ] [ Designated as safety issue: No ]
Complete list of historical versions of study NCT00881907 on ClinicalTrials.gov Archive Site
The secondary outcome measure will be conducted by measuring markers of stem cells prior to and after the formation of the blood clot. [ Time Frame: three year ] [ Designated as safety issue: No ]
The secondary outcome measure will be conducted by measuring markers of stem cells prior to and after the formation of the blood clot. [ Time Frame: one year ] [ Designated as safety issue: No ]
Not Provided
Not Provided
 
Tissue Characterization in Teeth Treated With a Regeneration Protocol
Tissue Characterization in Teeth Treated With a Regeneration Protocol

The purpose of the investigators study is to characterize the composition of the hard and soft tissues present in root canals of teeth previously diagnosed with necrotic pulps and incomplete root formation and treated with a triple antibiotic regeneration protocol. The investigators hypothesis is that treatment of teeth with necrotic pulps and immature apices with triple antibiotic paste will stimulate continued root formation by the deposition of dentin at the root apices. The primary outcome measure will be histological identification of mineralized tissue and adherent cells in the apical third of these teeth.

'Regeneration' as referred to in this protocol refers to the stimulation of continued root formation by the deposition of apical tissues subsequent to disinfection of a necrotic root canal and its contents and creation of a scaffold upon which cells can proliferate. While the proposed treatment protocol is currently being used in clinical practice and has been shown to be successful in case reports and case series, the nature of the proliferating apical tissues remains unknown. Thus, this study is uniquely positioned to address a critical gap in knowledge in the regeneration of a functional pulp-dentin complex. Moreover, results obtained from pediatric cases may well provide the essential foundation of knowledge for endodontists to apply this knowledge to the more difficult situation of regenerating the pulp-dentin complex of the full mature permanent tooth.

Interventional
Phase 0
Allocation: Randomized
Endpoint Classification: Pharmacodynamics Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Subject)
Primary Purpose: Treatment
Pulp Necrosis
Drug: Triple Antibiotic Paste
ciprofloxacin, metronidazole & minocycline mixed to a 1:1:1 powder used as a intracanal medicament for disinfection and cell proliferation.
Other Name: Triple Antibiotic Paste
  • Experimental: Group A
    Group A subjects will be asked to attend a recall visit 2 months following completion of the treatment visits.
    Intervention: Drug: Triple Antibiotic Paste
  • Experimental: Group B
    Group B subjects will be asked to attend a recall visit at 4 months following completion of the treatment visits.
    Intervention: Drug: Triple Antibiotic Paste
  • Experimental: Group C
    Group C subjects will be asked to attend a recall visit at 6 months following completion of the treatment visits.
    Intervention: Drug: Triple Antibiotic Paste
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
1
March 2014
March 2014   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • Patient Inclusion Criteria:

    • Healthy volunteers ages 10-60 with a non-restorable (as determined by referring dentist), permanent tooth with a necrotic pulp and incomplete root development.
    • Persons who seem to be cooperative with dental treatment and able to indicate willingness to obtain treatment and participate in the study and who are capable of verbally expressing dissent.
    • Parents who express understanding of study treatments and consent to treatment for their child of the regenerative procedure.
    • Healthy patients (ASA Class I or II physical status) with no systemic health problems that may interfere with healing and cell growth.
  • Tooth inclusion criteria:

    • Permanent tooth with necrotic pulp and immature root development, scheduled for extraction due to non-restorability.
    • Clinically confirmed necrotic pulp that will be confirmed with common endodontic pulp vitality tests (No response to cold or electric pulp test).
    • Clinically confirmed immature root development that will be assessed radiographically to confirm the non-restorability as diagnosed by the referring dentist.

Exclusion Criteria:

  • Patient Exclusion Criteria:

    • Parents and patients unable to give consent or express dissent.
    • Patients who are unwilling to undergo the dental treatment.
    • Patients affected by temporomandibular joint disorders.
    • Patients affected by known orofacial pain disorders.
    • Patients with ASA Class III or IV physical status (Immuno-compromised patients including patients who self-report that they are an HIV carrier, undergoing steroid therapy or chemotherapy, or those who self-report with genetic or systemic diseases that could result in reduced immune response).
  • Tooth Exclusion Criteria:

    • Teeth with vertical cracks that extend below the cemento-enamel junction.
    • Teeth that cannot be isolated using a rubber dam.
    • Teeth with non-odontogenic pathology.
    • Teeth whose apices are fully developed, as determined radiographically and correlated with dental age of patient.
Both
10 Years to 60 Years
Yes
Contact information is only displayed when the study is recruiting subjects
United States
 
NCT00881907
HSC20090152H
Yes
Kenneth Hargreaves, The University of Texas Health Science Center at San Antonio
The University of Texas Health Science Center at San Antonio
Not Provided
Principal Investigator: Kenneth M Hargreaves, DDS,PhD University of Texas
The University of Texas Health Science Center at San Antonio
March 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP