First-in-man Study of Adult Patients Suffered From Alveolar Osteitis Treated Using Stomatological Tamponade Contipro

Alveolar Osteitis (AO) is a complication following extraction of a tooth. AO manifests by localized pain in and around the extraction site where the postoperative blood clot has been disintegrated. The aim of this study was to determinate if there are any concerns of use of a pharmacological drug composed of an octenidine and lyophilized hyaluronic acid in a treatment of AO.

The tested drug is a sponge-like material composed solely of fully absorbable medicaments. It was designed to serve as non-toxic, slow-dissolving antiseptic which adheres to mucosa and so obturate the wound. The treatment was considered effective when the pain subsided to \< 20mm VAS in \< 8 days of treatment.

Alveolar Osteitis (AO) is a complication following extraction of a tooth. AO manifests by localized pain in and around the extraction site where the postoperative blood clot has been disintegrated. The AO incidence is reportedly conditioned by multiple risk factors including trauma/difficult extraction, smoking, acute inflammation of periodontal tissues (e.g. dentitio difficilis) prior to extraction. The use of oral contraceptives results in about 10 times higher incidence of AO. Furthermore, secondary contributing risk factors include age, flap design, local anesthetic containing vasoconstrictor, and bone/root debris left in the extraction wound. The drug tested in this study was composed from the Hyaluronic acid (HA) and Octenidine dihydrochloride (ODC). It was designed to perform comparatively in pain alleviation and to promote healing while avoiding the side effects.

The aim of this clinical study was to determinate if there are any concerns of use a pharmacological drug composed of ODC and HA in treatment of AO. The drug was designed to fulfill the following criteria: to disinfect the wound (provided by ODC), attach to the mucosa (HA), obturate the wound (HA), be stable in the presence of saliva (HA), be fully absorbable (ODC, HA), enhance healing process (HA), be non-allergic and have analgesic effect (ODC, HA).

The sponge-like pharmacological drug is a lyophilized water solution of ODC, HA, stabilized with calcium chloride; as such it is fully dissoluble, has antiseptic properties and is malleable. The drug was manufactured by Contipro Pharma a.s. (Czech Republic). The study was designed as a multi-center, open-label, first-in-men study and was approved by the ethical committee of the University Hospital Hradec Králové.

Upon the study initiation, the study subjects' extraction wounds were examined and described by the medical professional and the subjects' perceived-pain self-evaluation base data was recorded. The perceived pain was recorded on 0-100 mm VAS. Afterwards, the treatment was introduced. Firstly, the wound had been irrigated with 2 ml of 3% solution of H2O2 to disinfect the site and then flushed by 2 ml of Aqua pro injectione to clear any remaining debris. After, the tested drug was applied into the extraction wound. This procedure was repeated on a daily basis for a maximum of 7 days or until the pain subsided below 20 mm and remained there for at least 2 days.

The treatment was considered effective when the pain subsided to \< 20mm VAS in \< 8 days of treatment. Descriptive statistics were provided for each of the criteria using the following values: 1) for continuous data: mean, standard deviation (SD), median, lower/upper quartile, minimum and maximum values, 2) for qualitative data: absolute count and percentages. Hypotheses are tested at standard cutoff α = 0.05.

A descriptive analysis approach (including frequency tables) was used to assess clinical management, clinical outcomes and healthcare resources used. When appropriate two-sided 95% confidence interval was obtained for population characteristics of a variable. All calculations and summaries were produced using R version 3.2.3 (R Core Team, Austria).

Eligibility Criteria:
Inclusion Criteria:

* Patient with diagnosed alveolar osteitis
* Minimal age limit 18 years
* Patient capable to fully understand and comply with the requirements of the study

Exclusion Criteria:

* Patient younger than 18 years
* Pregnant or lactant woman
* Patient diagnosed with cancer
* Patient with a history of radiotherapy in the head and neck area
* Patient undergone bisphosphonate treatment within the last two years
* Patient who had been given antibiotics less than two weeks prior the AO onset
* Patient with hypersensitivity or allergy to any substances contained in the tested drug
* Patient who smokes more than 10 cigarettes per day