Clinical and Radiographic Evaluation of Local Application of Melatonin on Osseointegration of Immediate Dental Implants for Mandibular Single Rooted Teeth: A Randomized Controlled Study
Dental implant is a treatment option that offers great functional and biologic advantages alongside noticeable long-term success outcomes with survival rates exceeding 95% . Delayed implant placement has been widely and successfully used for replacing missing teeth However, there are some challenges faced with delayed implant placement protocol due to the postextraction alveolar ridge resorption in buccolingual and apicocoronal directions . The percentage of the post-extraction horizontal and vertical dimensional changes are 29-63% and 11-22% respectively . This is attributed to the disruption of vascular supply due to damage of periodontal ligament leading to pronounced bundle bone resorption . This pronounced post-extraction bone resorption usually leads to functional challenges and the need for augmentation procedures . In order to avoid such challenges, immediate post-extraction implant placement concept was introduced to avoid the bone resorption following tooth extraction and to reduce treatment time . Immediate implant placement showed a high overall implant placement rate reaching 97.1% as reported in the systematic review and 94.9% in the meta-analysis Although immediate implant placement is effective in preservation of the alveolar bone dimensions but it fails to completely prevent the postextraction dimensional changes . Therefore, attempts were done regarding placement of various biomaterials in the peri-implant gap to increase the immediate implant stability and to minimize or even prevent the post-extraction bone dimensional changes if possible. Multiple materials were successfully used such as bone grafting materials like xenografts , autogenous graftsin addition to the application of bone morphogenetic proteins (BMPs), platelet rich fibrin (PRF) . Melatonin (MLT) among these agents which are of a great interest for the recent researches whether in the medical or dental fields due to their confirmed physiological and structural functions, their biocompatibility and non-antigenic properties . MLT is a natural hormone with powerful antioxidant properties, released mainly the pineal gland . It is successfully used in various conditions as sleep disorders, cardiovascular, chronic inflammatory diseases and parkinsonism
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
16
the implant was placed with melatonin application (3mg Melatonin into 2ml of Hydroxyethyl Cellulose Gel 2%).
the implant was placed without melatonin.
Faculty of Dentistry Suez Canal University
Ismailia, Egypt, Egypt
Implant stability (ISQ)
Implant stability will be evaluated using resonance frequency analysis and recorded as ISQ values at the specified time points.
Time frame: Immediately postoperatively and at 6months postoperatively
post-operative pain (VAS)
Postoperative pain assessed using visual analogue scale (VAS) Visual Analog Scale (VAS) for Pain, Grades: 0 - No pain 1-3 - Mild pain (nagging, annoying, but not interfering with activities) 4-6 - Moderate pain (interferes significantly with activities) 7-10 - Severe pain (disabling, unable to perform activities)
Time frame: At 1, 3 and 7 days postoperatively
post-operative Edema
Post-operative Edema Scale (Grade 0-3) Grades: Grade 0: No edema observed Grade 1: Intraoral edema only Grade 2: Extraoral edema Grade 3: Diffuse edema involving both intraoral and extraoral areas
Time frame: At 1, 3 and 7 days postoperatively
Marginal bone loss
Marginal bone loss: measured using DIGORA software (Soredex, Helsinki, Finland) by calculating the vertical distance (in mm) from the implant shoulder/platform to the first bone-to-implant contact on mesial and distal aspects.
Time frame: Each patient will be radiographically assessed immediately postoperative, after 3 months and after 6 months.
Bone density
bone density around each implant will be assessed using DIGORA software (Soredex, Helsinki, Finland). A standardized region of interest (ROI) will be selected adjacent to the implant, and the mean gray scale values will be calculated to represent bone density.
Time frame: Each patient will be radiographically assessed immediately postoperative, after 3 months and after 6 months.
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