Clinical trial NCT07012564: Does Vitamin C Improve Postoperative Healing
Official title: Does Vitamin C Improve Postoperative Healing: A Randomized Split-Mouth Clinical Trial After Impacted Mandibular Third Molar Surgery
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Impacted Mandibular Third Molar
Keywords: Vitamin C
Wound Healing
Third Molar Surgery
Oral Surgery
Postoperative Recovery
Trismus
Facial Swelling
Pain
Analgesic Use
Edema
Lead sponsor: Hacettepe University
Sponsor class: OTHER
First posted: 2025-06-10
Enrollment: 56
Sex: ALL
Minimum age (years): 18
Maximum age (years): 35
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Intervention model description: This study employed a split-mouth crossover design, where each participant served as their own control. Bilateral surgical extractions of impacted mandibular third molars were performed in two separate sessions. The intervention (vitamin C) and the control (placebo) were randomly assigned to either the left or right surgical site, allowing intra-individual comparison of postoperative outcomes.
Primary purpose: TREATMENT

Brief summary: This randomized, split-mouth clinical trial investigates the effect of oral vitamin C supplementation on postoperative recovery following the surgical extraction of impacted mandibular third molars. Fifty-six healthy patients underwent bilateral extractions, with each side randomly assigned to receive either 1000 mg of oral vitamin C or a placebo. The supplementation began one day before surgery and continued through postoperative day 7. The outcome measures included facial swelling assessed through linear measurements (tragus-pogonion, tragus-commissure labiorum, and lateral canthus of the eye-angulus mandible), pain using a visual analog scale (VAS), trismus based on maximum interincisal opening, and early wound healing assessed with the Landry healing index. Analgesic consumption was also recorded. Pain was evaluated using VAS on days 1, 2, and 7. Edema, trismus, and early wound healing were evaluated on postoperative days 2 and 7. The study aims to determine whether vitamin C reduces edema, pain, and trismus, and enhances early soft tissue healing compared to placebo.

Detailed description: This randomized, split-mouth clinical trial aimed to investigate the effect of oral vitamin C supplementation on postoperative recovery following the surgical extraction of impacted mandibular third molars. A total of 56 healthy patients requiring bilateral lower third molar extractions were included in the study. Each patient underwent two separate surgeries on both sides, with each side randomly assigned to receive either 1000 mg of oral vitamin C or a placebo.

Vitamin C supplementation started one day prior to surgery and continued for seven days postoperatively. The primary outcomes of the study were facial swelling, pain, trismus, and early soft tissue healing. Facial swelling was assessed using three linear measurements between specific anatomical landmarks: tragus-pogonion, tragus-labial commissure, and lateral canthus of the eye-angulus mandible. Trismus was measured based on maximum interincisal distance. Pain was evaluated using the visual analog scale (VAS) on postoperative days 1, 2, and 7. Edema, trismus, and early wound healing were assessed on postoperative days 2 and 7. Early wound healing was scored using the Landry healing index. Analgesic consumption was also recorded during the postoperative period.

This study was designed to evaluate whether vitamin C supplementation could reduce postoperative edema, pain, and trismus, and improve early soft tissue healing in comparison to placebo in the context of oral surgical procedures. The findings may provide evidence to support the use of vitamin C as an adjunctive therapy in oral surgery.

Eligibility criteria: Inclusion Criteria:

* Age 18-35 years
* Systemically healthy
* Non-smoker
* No alcohol or substance abuse
* Bilateral impacted mandibular third molars
* Mesioangular impaction with a Pederson index of 5-6
* Voluntary participation
* Ability and willingness to attend follow-up visits

Exclusion Criteria:

* Pregnancy or lactation
* Presence of infection or pain related to third molars
* Associated pathological conditions (e.g., cysts or tumors)
* History of previous mandibular third molar extraction
* Congenital absence of third molars
* Known allergy to any drug or substance used in the study

Primary outcomes:
measure: Postoperative Facial Swelling
timeFrame: Postoperative Day 2 and Day 7
measure: Postoperative Pain Score (VAS)
timeFrame: Postoperative Days 1, 2, and 7
Secondary outcomes:
measure: Trismus (Maximum Interincisal Opening)
timeFrame: Postoperative Days 2 and 7
measure: Early Wound Healing (Landry Healing Index)
timeFrame: Postoperative Days 2 and 7
measure: Analgesic Consumption
timeFrame: Postoperative Days 1,2 and 7
Other outcomes:
Locations:
city: Ankara
country: Turkey
facility: Hacettepe University Faculty of Dentistry
Study officials:
References: