Nanodiamond-Gutta Percha Composite Biomaterials for Root Canal Therapy

Dental Pulp Necrosis Clinical Trial

— NDGX  

Official title:

Nanodiamonds and Antibiotics Modified Gutta-percha (NDGX) for Non-surgical Root Canal Therapy (RCT) Filler Material

Clinical Trial Details — Status: Withdrawn

Administrative data

• NCT number: NCT03376984
• Other study ID #: 17-001308
• Status: Withdrawn
• Phase: Phase 2/Phase 3
• Start date: June 2023
• Est. completion date: June 2025

Study information

• Verified date: September 2023
• Source: University of California, Los Angeles
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The purpose of this study is to to compare root canal therapy success between two root canal filler materials: 1) gutta percha (GP), 2) gutta percha modified with nanodiamonds and amoxicillin (NDGX). Gutta percha is the current standard root canal filler material used during non-surgical root canal therapy (RCT). Gutta percha modified with nanodiamonds and amoxicillin is an investigational root canal filler material, not yet FDA approved for use as described in this study. The safety and usefulness of NDGX is being tested in this study in comparison to the current standard of care, gutta percha (GP).

Description:

This minimal-risk comparison (non-inferiority) study aims to investigate the advantages of Nanodiamond and Amoxicillin modified gutta percha (NDGX) as a root canal filler material for non-surgical root canal therapy. In comparison with the current standard of care, gutta percha (GP), NDGX benefits the patient because NDGX is stronger, may better prevent bacterial reinfection, and potentially reduces complications of non-surgical root canal therapy (RCT) such as tooth fracture, thereby improving overall treatment prognosis. In this study, patients with non-molar teeth needing root canals will be recruited and randomized into two RCT filler material patient groups, with 27 patients with roots filled with the control (GP), and 27 patients with roots filled with NDGX. All patients will be receiving standard of care, and their involvement in our study will only deviate from standard of care in the informed consent process, initial randomization of the root canal filler material, and clinical data collection for research record (already collected in standard of care) from their visits. All patients in the control arm of the study will undergo root canal therapy in which the root canals will be filled with GP. All patients in the NDGX arm of the study will undergo root canal therapy with canals filled with GP in the apical (lower third) end and NDGX in the middle and top thirds of the root canal. In accordance with the standard of care, patients will ideally commit to a total of five visits over a two year period in line with the current standard of care: one pre-treatment consultation appointment, a root canal therapy appointment, a 6 month follow-up appointment, a 1 year follow-up appointment, and a 2 year follow-up appointment. Following standard of care protocol, additional follow-up appointments prior to the 6 month, 1 year, and 2 year follow-up appointments may be required in the event of infection, persistent pain of the root canal following the treatment, and/or at clinician's discretion. Comparison between the control (GP) and NDGX arms of the study will be based upon patient data collected, which will be used to determine clinical "success" derived from reduction and/or absence of a periapical radiolucency and verified with objective and subjective clinical findings such as patient symptoms. Patient data will be categorized by age, weight, gender, and use of other drugs, which may alter the pain assessment and pilot study success indicators.

Recruitment information / eligibility

• Status: Withdrawn
• Enrollment: 0
• Est. completion date: June 2025
• Est. primary completion date: December 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• All of the patients must be over 18 years of age and in need of non-surgical RCT treatment during the consultation visit.

Exclusion Criteria:

• Molar teeth
• Osteoporosis medication or i.v. bisphosphonates
• Dental material allergies
• Allergic to penicillin and/or amoxicillin
• Have MD consult/medically compromised/prophylaxis needed

Related Conditions & MeSH terms

• Dental Pulp Diseases
• Dental Pulp Necrosis
• Necrosis
• Nerve Root Pain Nec

Intervention

Combination Product:
• ND and AMOX modified Gutta Percha
Gutta percha reinforced and modified with 5 nm diameter nanodiamonds and amoxicillin

Device:
• Gutta Percha
Gutta percha is a device made from coagulated sap of certain tropical trees intended to fill the root canal of a tooth. The gutta percha is softened by heat and inserted into the root canal, where it hardens as it cools. Gutta percha is classified as Class I (general controls).

Locations

Country	Name	City	State
United States	University of California, Los Angeles	Los Angeles	California

Sponsors (1)

Lead Sponsor	Collaborator
University of California, Los Angeles

Country where clinical trial is conducted

United States, 

References & Publications (2)

Lee DK, Kee T, Liang Z, Hsiou D, Miya D, Wu B, Osawa E, Chow EK, Sung EC, Kang MK, Ho D. Clinical validation of a nanodiamond-embedded thermoplastic biomaterial. Proc Natl Acad Sci U S A. 2017 Nov 7;114(45):E9445-E9454. doi: 10.1073/pnas.1711924114. Epub 2017 Oct 23. — View Citation

Lee DK, Kim SV, Limansubroto AN, Yen A, Soundia A, Wang CY, Shi W, Hong C, Tetradis S, Kim Y, Park NH, Kang MK, Ho D. Nanodiamond-Gutta Percha Composite Biomaterials for Root Canal Therapy. ACS Nano. 2015 Nov 24;9(11):11490-501. doi: 10.1021/acsnano.5b05718. Epub 2015 Oct 15. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Root canal treatment success	Defined as the reduction and/or absence of in periapical radiolucency (PARL) that is verified with objective and subjective clinical findings such as patient symptoms reported (e.g. reported pain levels).	2 years