Background: Narrow-diameter implants (NDI) would be beneficial to decrease the rate of augmentations necessary for implant insertion. This might help especially elderly patients or patients with general medical risk factors who would benefit from implant therapy with reduced surgical invasiveness. The other important indication, for which NDI would be beneficial, are small inter- dental or interimplant gaps, which are often found in the premolar or incisor region. Therefore, the employment of NDI (≤ 3.4 mm) might broaden the treatment spectrum and also help to reduce or avoid augmentation procedures. Material and Method: A total of 20 implants were placed (10 implants per group) in subjects requiring placement of mandibular. Selected groups were grouped on the basis of loading of implants. The patient was then recalled for follow up for radiographic evaluation which was made at 1week, 3months and 6 months of implant loading for evaluation of crestal bone changes with help of radiographs. Result: The result of this says that crestal bone loss around implants which are loaded by following early loading protocol led to lesser bone loss when compared to implants which are loaded by following immediate loading protocol, considering all the other factors remains unchanged.
Key words: Narrow, Diameter, Implant