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Effect of Redon-type Drains on Postoperative Edema Following Mandibular Orthognathic Surgery: a Randomized, Controlled Superiority Trial With Two Parallel Arms (DPO - OM)

11 novembre 2026 mis à jour par: University Hospital, Tours

Orthognathic surgery involves the maxillary and/or mandibular skeletal bases; it entails maxillary and/or mandibular osteotomies (such as sagittal split osteotomies of the mandibular rami) aimed at restoring normal maxillomandibular skeletal and dento-occlusal relationships in patients with maxillomandibular dysmorphosis. These deformities give rise to morphological, aesthetic, and functional abnormalities that can be severe (e.g., respiratory issues, temporomandibular joint pain). Postoperative edema is inevitable following orthognathic surgery; it can be significant, causing pain and discomfort while delaying patient recovery and hospital discharge. The use of Redon-type drains for mandibular osteotomies is not a standard practice across surgical teams due to a lack of consensus. The only available data come from studies with methodologies that do not allow for a definitive conclusion regarding the superiority of using-or not using-postoperative Redon drains (Lee et al. 2020), and no clinical trials have investigated this issue. This project aims to evaluate the impact of Redon-type drainage in mandibular osteotomies (sagittal split osteotomies of the mandibular rami), whether or not combined with genioplasty (osteotomy of the mental symphysis). We hypothesize that drainage using Redon-type drains for 6 hours in the immediate postoperative period following mandibular osteotomies significantly reduces postoperative edema.

The primary objective of this clinical trial is to demonstrate the superiority-in terms of reducing postoperative edema at day 2-of placing Redon-type drains for 6 hours immediately following sagittal split osteotomy of the mandibular rami (in addition to standard postoperative care) compared to standard postoperative care alone, without a drainage device.

Hypothesis: Demonstrating that the use of Redon-type drains following orthognathic surgery osteotomies reduces postoperative edema, pain, and discomfort would provide a rational basis for this practice and support its routine implementation. The expected benefits are twofold, impacting both patients and public health. For patients, the anticipated benefits include reduced postoperative discomfort and pain, faster recovery, and shorter hospital stays, with the future prospect of outpatient care.

Aperçu de l'étude

Type d'étude

Interventionnel

Inscription (Estimé)

72

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Lieux d'étude

      • Angers, France
        • Chu Angers
      • Nantes, France
        • Chu Nantes

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

15 ans et plus (Enfant, Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

La description

Inclusion criteria:

  • Patients aged 15 years or older

  • Undergoing mandibular osteotomies, with or without genioplasty, with or without wisdom tooth extraction (maxillary and/or mandibular)

  • Informed consent obtained from the adult patient, or from the holder(s) of parental authority if the patient is a minor*

  • Enrolled in a French social security program

    • When both holders of parental authority cannot give joint consent, the consent of a single legal representative may be obtained in situations provided for by regulations or duly justified and documented in the source file.

Exclusion Criteria:

  • History of maxillomandibular bone surgery
  • Coagulation disorder
  • Thrombophilia
  • Patients on anticoagulants or antiplatelet agents
  • Patients with a constitutional bone disorder
  • Patients with a syndromic craniofacial malformation
  • Absolute or relative contraindications to treatment with corticosteroids
  • Pregnant (urine test) or breastfeeding women
  • Patients under legal guardianship, conservatorship, or judicial protection
  • Contraindications to the procedure
  • Patients who have taken corticosteroids or NSAIDs on the day before the procedure (D-1).

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: La prévention
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: experimental arm

with drains placed at the end of the procedure, in addition to standard postoperative care. These will be Redon drains with an outlet that is either intraoral or transcutaneous in the cervical region, depending on the participating center's practices (intraoral transmucosal in the Tours and Angers centers or transcutaneous in the Nantes center); these drains will be removed 6 hours after placement

Translated with DeepL.com (free version)

in which drains are placed at the end of the procedure, in addition to standard postoperative care.

Comparateur actif: control arm

which consists of not placing any drainage device immediately after surgery, with standard postoperative care identical to that of the experimental group.

not placing any drainage device immediately after surgery, with standard postoperative care identical

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Postoperative swelling
Délai: Cervicofacial linear measurement will be collected 48 hours after the randomization (day 2) and at month 3. As the facial skeletal anatomy will be modified by the surgical procedure, month 3 will be considered as the baseline measurement.

The primary outcome will be the post operative facial swelling 48 hours after the end of the surgical procedure (randomization will be at this timepoint) measured with cervicofacial linear measurements

Cervicofacial linear measurement will be collected 48 hours after the randomization (day 2) and at month 3. As the facial skeletal anatomy will be modified by the surgical procedure, month 3 will be considered as the baseline measurement.

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Postoperative swelling
Délai: Cervicofacial linear measurement will be collected at 6 hours after randomization, 24 hours after randomization (day 1) and at day 7

Postoperative swelling at other time points than for the primary outcome, measured with cervico facial linear measurements

Cervicofacial linear measurement will be collected at 6 hours after randomization, 24 hours after randomization (day 1) and at day 7
Postoperative swelling
Délai: It will be collected 24 hours after randomization (day 1) , at day 2, at day 7 and at month 3

Postoperative swelling using 3D photogrammetry instead of cervicofacial linear measurements

It will be collected 24 hours after randomization (day 1) , at day 2, at day 7 and at month 3
Pain intensity
Délai: Pain will be collected 6 hours after randomization, at day 1 (24 hours after randomization), at day 2 and at day 7

Pain will be measured using a visual analog scale where 0 corresponds to no pain and 10 to unbearable pain

Pain will be collected 6 hours after randomization, at day 1 (24 hours after randomization), at day 2 and at day 7
Aesthetic discomfort
Délai: It will be collected 6 hours after randomization, at day 1 (24 hours after randomization), at day 2 and at day 7

Aesthetic discomfort will be measured using a visual analog scale with 0 indicating no discomfort and 10 corresponding to an extremely uncomfortable feeling

It will be collected 6 hours after randomization, at day 1 (24 hours after randomization), at day 2 and at day 7
Breathing discomfort
Délai: It will be collected 6 hours after randomization, at day 1 (24 hours after randomization), at day 2 and at day 7

Breathing discomfort will be measured using a visual analog scale where 0 corresponds to no discomfort and 10 to extremely bothersome

It will be collected 6 hours after randomization, at day 1 (24 hours after randomization), at day 2 and at day 7
Swallowing discomfort
Délai: It will be collected 6 hours after randomization, at day 1 (24 hours after randomization), at day 2 and at day 7

Swallowing discomfort will be measured using a visual analog scale where 0 corresponds to no discomfort and 10 to extremely bothersome

It will be collected 6 hours after randomization, at day 1 (24 hours after randomization), at day 2 and at day 7
Pain during redon drain removal
Délai: It will be collected 6 hours after randomization, at time to redon removal.

Pain during redon drain removal will be collected for participants of the experimental group after redon drain removal

It will be collected 6 hours after randomization, at time to redon removal.
The daily bed rest in hours
Délai: It will be collected at day 1 and at day 2 (how long the participant stay in his bed in the last 24 hours) as well as at day 7 (how long the participants stay in his bed each day of the last 4 days).

It corresponds to how long, in hours, the participant stays in his bed each day.

It will be collected at day 1 and at day 2 (how long the participant stay in his bed in the last 24 hours) as well as at day 7 (how long the participants stay in his bed each day of the last 4 days).
The general well-being
Délai: It will be collected at day 7 and at month 3

General well-being will be assessed using the GHQ-28 self-assessment questionnaire. The GHQ-28 is a questionnaire with 28 items and with scores ranging from 0 - indicating no deterioration in well-being - to 84 - indicating a significant deterioration in well-being.

It will be collected at day 7 and at month 3
The length of hospital stay
Délai: a maximum of 90 days

It corresponds to the lenght of the hospital stay, in days (a maximum of 90 days)

a maximum of 90 days
Postoperative adverse events
Délai: Throughout the three-month follow-up period, whenever an adverse event occurs

Postoperative adverse events correspond to hematoma, pre-thoracic hematoma spread, and infection

Throughout the three-month follow-up period, whenever an adverse event occurs

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Les enquêteurs

  • Directeur d'études: Anne MORICE, Dr, University Hospital, Tours

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

30 décembre 2026

Achèvement primaire (Estimé)

30 décembre 2029

Achèvement de l'étude (Estimé)

28 mars 2030

Dates d'inscription aux études

Première soumission

6 octobre 2026

Première soumission répondant aux critères de contrôle qualité

11 novembre 2026

Première publication (Réel)

12 novembre 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

12 novembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

11 novembre 2026

Dernière vérification

1 novembre 2026

Plus d'information

Termes liés à cette étude

Plan pour les données individuelles des participants (IPD)

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Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

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Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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