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NCT06824493
Study on the changes in oral microbiota during orthodontic treatment in patients aged 8-18 years. Orthodontic patients treated at Stomatology Hospital of Xi'an Jiaotong University from March 2025 to March 2027 will be recruited. Prior to orthodontic treatment, routine preoperative examinations will be conducted, informed consent forms will be signed, baseline oral conditions will be recorded, and oral and psychological-related questionnaires will be completed. Patients will be informed of the need for regular oral hygiene check-ups, caries risk assessments will be performed, and plaque, saliva, and intraoral photographs will be collected. During orthodontic treatment, plaque samples will be collected every 3 months, and saliva samples will be collected every 6 months until the treatment is completed to evaluate the changes in oral microbiota throughout the orthodontic process.
NCT06752902
Oral dysbiosis systematically develops during orthodontic treatment \[35\]\[36\]. Orthodontic appliances interfere with oral hygiene procedures and cause biofilm to accumulate, creating new retention zones, even in subjects who maintain correct oral hygiene \[37\]: * A group benefiting from intensive personalised prevention * A "conventionally monitored" group, with no personalised prevention. The hypothesis is that personalised prevention prevents dysbiosis from taking hold. If this hypothesis is confirmed, the concept could be extended to all patients, beyond orthodontics. Based on the "biological signature" (microbiological and immune), a "risk profile" of patients could be defined, making it possible to better personalise the prevention message, the method applied and the frequency of follow-up. The aim would be to rebalance dysbiosis through a personalised prevention approach tailored to the profile defined. It was decided to explore this hypothesis initially with orthodontic patients because they are "captive", i.e. in the course of treatment requiring regular visits. Prevention is aimed first and foremost at healthy patients, with the aim of maintaining them in good health. The project focuses on young patients undergoing orthodontic treatment
NCT06602154
In this split mouth study design, 34 orthodontic patients coming for fixed appliance treatment will be bonded with standard light-cure composite bonding material and intervention of Resin Modified Glass Ionomer Cement (RMGIC). Contralateral quadrants will be allocated randomly for either RMGIC or visible light-cure composite bonding in both upper and lower jaw. Quadrant 1: Randomly selected, contralateral upper and lower quadrants from central incisor to second premolar will be bonded with RMGIC bonding system. Quadrant 2: Randomly selected, contralateral quadrants from central incisor to second premolar will be bonded with visible light-cure composite bonding material. Allocation of diagonally opposite quadrants by either bonding system will be assigned randomly. Quadrants to be bonded with Resin-modified glass ionomer cement and light-cure composite bonding material will be switched from patient to patient to ensure randomization. This study is single blinded. The study investigators will not be blinded while the patient will be kept blinded. On the first visit, a specially designed consent form will be signed by the participant. Patient interaction for the purpose of study will only be for 1 hour duration while bonding of brackets. After six months amount and location of bond breakages will be evaluated from orthodontic record files. This study will help us evaluate bond strength of RMGIC as compared to light cure composite. RMGIC can also be considered as the choice of material for bonding in high risk caries patients.
NCT06199674
The aim of this study is to investigate the effects of photobiomodulation therapy (PBM) on the dental and periodontal health of patients undergoing fixed-appliance orthodontic treatment, including orthodontically induced root resorption, orthodontic pain, space closing rate, and dental microbiome profile in dental plaques.
NCT02796911
Objective: Periodontally accelerated osteogenic orthodontics(PAOO) will minimize treatment time. The current study will be carried to evaluate the effectiveness of different bone grafts with a modified, less invasive corticotomy technique in the treatment of adult patients with moderate crowding. Subjects and Methods: Thirty orthodontic patients will be selected. Patients were randomly classified into three groups. Group I will be treated with a modified technique of corticotomy, whereas group II will be treated with the same technique combined with PAOO using bovine derived xenograft, and group III will be treated with the same technique combined with PAOO using with bioactive glass. The total duration of active orthodontic treatment will be estimated. Probing depth, bone density and root length will be also evaluated. The measurements will be recorded.
NCT05814991
It is very important to decrease the bleeding during bimaxillary osteotomy in order to increase the visibility of the surgical site. Our primary goal is to investigate the predictive value of pre- and perioperative factors, including controlled hypotension, on visibility of surgical site during bimaxillary osteotomy.