OZONE_EXO: Comparative Analysis of Protocols for Dental Exactions in Patients at Risk of MRONJ: Case-control Study

Phase 1

Completed

Conditions: MEDICATION RELATED OSTEONECROSIS OF THE JAW

Interventions: Biological: OxigenOzone_Insufflation

Registration Number: NCT06072404

Lead Sponsor: University of Palermo

Brief Summary: Medication-related osteonecrosis of the jaw (MRONJ) is a serious adverse reaction of antiresorptive and antiangiogenic agents; it is also a potentially painful and debilitating condition. Today, no specific studies have prospectively evaluated the efficacy of its treatment and no robust standard of care has been established.

Among non-invasive procedures to treat MRONJ, the use of medical ozone (O3) arises for its properties and has been deployed and evaluated. O3 has generally proven to play a role in the treatment of chronic, nonhealing, or ischemic wounds, due to its antimicrobial and anti-oxidant properties and to bio-stimulation; it has been extensively used for different medical approaches and purposes. In oral cavity, local applications are carried out by ozonized water (i.e. spray or compress) or gel.

The aim of this study was to carry out a case-control study in order to compare two different protocols of dental extractions in patients at risk of MRONJ, with and without infiltration of a mixture of oxygen-ozone.

All the cases in our study are cancer and oncologic and osteometabolic patients undergoing high-risk therapy for MRONJ (antiresorptive and antiangiogenic drugs) who require dental extractions with a poor prognosis. During the first examination (T0), medical, pharmacological, and dental history of patients are recorded. Data collected are: (1) age; (2) gender; (3) indications for use, type, cumulative dose and duration of MRONJ-related drugs; (4); history of chemotherapy; (5) other medications; (6) other diseases; (7) smoking.

For each patient, an orthopantomography and a cone beam computed tomography of the teeth are performed only if indicated.

Detailed Description: The enrolled patients were randomly divided into two groups:

Group A: consisting of 38 patients (undergoing ozone treatment) (OZONE_EXO) intra-tissutal perialveolar injections of a 15-mL mixture of OxigenOzone (O2O3) with a 26Gx1⁄2 - 0.45x13 mm needle and insufflation of the same mixture in the post-extraction site in patients at risk of medication-induced osteonecrosis of the jaw (ONJ).

Group B: comprising 79 controls (not undergoing ozone treatment).(NO_OZONE_EXO) Tooth extraction in patients at risk of medication-induced osteonecrosis of the jaw (ONJ) without the use of ozone application.

Following the same approach as in Group A, patients in Group B underwent additional follow-up visits at T1 (3-5 days), T2 (14 days), and T3 (6 weeks) post-extraction, in accordance with Inflammatory - P roliferative - Remodeling (IPR) Wound Healing Scale.

the IPR scale score, to meticulously monitor surgical wound healing and record pain intensity using the NRS scale, rather than the originally planned VAS scale, for enhanced ease of use \[22\].

The IPR scale provided a comprehensive assessment of wound healing through distinct subscales, each ranging from 0 to 1, resulting in a total score ranging from 0 to 16. These subscales evaluated the inflammatory response, proliferative response, and remodeling process. At the conclusion of the follow-up period, the total IPR score was computed, with scores spanning from 0 to 16. Scores of 0-4 denoted poor healings, scores of 5-10 indicated acceptable healing, while scores of 11-16 suggested excellent healing.

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 117

Inclusion Criteria

age ≥ 18 yrs
patients at risk of developing MRONJ for previous or current administration of drugs related
extraction of teeth with a poor prognosis due to severe decay and/or periodontitis

Exclusion Criteria

previous radiation in the head and neck area
neoplastic involvement of the jaw
previous MRONJ diagnosis

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Group A (OZONE_EXO)	OxigenOzone_Insufflation	intra-tissutal perialveolar injections of a 15-mL mixture of OxigenOzone (O2O3) with a 26Gx1⁄2 - 0.45x13 mm needle and insufflation of the same mixture in the post-extraction site in patients at risk of medication-induced osteonecrosis of the jaw (ONJ).

Primary Outcome Measures

Name	Time	Method
Healing Evaluation Using Inflammatory-Proliferative-Remodelling Scale (IPR Scale): Inflammatory Phase	3-5 days after the intervention	The inflammatory phase is evaluated 3-5 days after tissue injury on the basis of eight parameters, measured on a 9-point scale (0-8): bleeding (spontaneously or on palpation), granulation tissue, hematoma, tissue color, incision margins, suppuration, edema, and pain. A score of 5-8 indicates a successful inflammatory phase
Healing Evaluation Using Inflammatory-Proliferative-Remodelling Scale (IPR Scale): Proliferative Phase:	14 days after the intervention	The proliferative phase is evaluated 14 days after tissue injury on the basis of five parameters, measured on a 6-point scale (0-5): re-epithelialization, tissue color, scar, suppuration, and pain. A score of 3-5 score indicates successful healing.
Healing Evaluation Using Inflammatory-Proliferative-Remodelling Scale (IPR Scale): Remodelling Phase	6 weeks after the intervention	The remodeling phase is evaluated 6 weeks after tissue injury on the basis of three parameters, measured on a 4-point scale (0-3): scar, tissue color, and pain. A score of 2-3 indicates successful healing

Secondary Outcome Measures

Name	Time	Method
Healing Evaluation Using IPR Scale: Total Process	6 week	The total score of the IPR scale ranges from 0 to 16:0-4 indicates poor healing; 5-10, acceptable healing; and 11-16, excellent healing The inflammatory phase carries the greatest weight in the final score because its impairment can jeopardize the entire series of biologic events leading to early wound healing.