Comparison of autogenous tooth bone graft and synthetic bone graft materials used for bone resorption around implants after crestal approach sinus lifting: a retrospective study

Abstract

PurposeThis retrospective study compares the amount of bone resorption around implants between an autogenous tooth bone graft (AutoBT) and a synthetic bone graft after a bone-added crestally approached sinus lift with simultaneous implant placements.MethodsIn all, 37 patients participated in this study. Seventeen patients were grouped as group I and underwent an AutoBT-added sinus lift using the crestal approach. The remaining 20 patients were grouped as group II and underwent synthetic bone grafting. Both groups received the implant placements simultaneously. Of the 37 participating patients, only 22 patients were included in the final results: Eleven patients of group I and 11 patients of group II. Before the surgery, the distance from the alveolar crest to the sinus floor was measured using panoramic radiography. After the surgery, the distance was measured again from the neck of the implant thread to the most superior border of the added graft materials. Then, the amount of sinus lift was calculated by comparing the two panoramic radiographs. After a year, a panoramic radiograph was taken to calculate the resorption of the bone graft material from the radiograph that was taken after the surgery. The significance of the resorption amount between the two types of graft materials was statistically analyzed.ResultsThe bone height was increased to an average of 4.89 mm in group I and 6.22 mm in group II. The analysis of panoramic radiographs 1 year after the surgery showed an average bone resorption of 0.76 mm and 0.53 mm, respectively. However, the degree of lifting (P=0.460) and the amount of bone-grafted material resorption (P=0.570) showed no statistically significant difference.ConclusionsBased on this limited study, AutoBT can be considered a good alternative bone graft to a synthetic bone graft in a bone-added sinus lift, when extraction is necessary prior to the surgery.Graphical Abstract

Applications of Moldable Autogenous Tooth Bone Graft (M-AutoBT) Mixed with Hydroxypropylmethyl Cellulose for Sinus Lifting

“…AutoBT with composites of 30 % β-TCP and 70 % HAp in human sinus, an average bone resorption was 0.76 mm with AutoBT powders while 0.53 mm with osteon composites 8) . Lastly, when comparing AutoBT powders with a bovine-derived inorganic material (Bio-Oss) in human sinus, they showed similar healing pattern, excellent graft volume maintenance, and active new bone formation while the trabecular and osteoid in the AutoBT group were thicker than those in the Bio-Oss group 9) .…”

“…It has been found to be an excellent biocompatible material with osteoinductive and osteoconductive potential by bio-recycling of the tooth, which has been discarded traditionally after the extraction 1,6,7) . Also, clinical reports were already published that AutoBT by itself had great ability for new bone formation and remodeling, comparing to another graft materials in sinus 8,9) . Several base materials such as hydroxypropylmethyl cellulose (HPMC) and hyaluronc acid in order to increase the viscosity of bone graft substitute or to promote cellular activities for bone regeneration have been reported and confirmed its safety and better performance 10) .…”

Untitled

“…7 A study conducted by Kim YK et al concluded that auto block type tooth bone graft can be considered a good alternative bone graft to a synthetic bone graft in a bone-added sinus lift, when extraction is necessary prior to the surgery. 8 Murata M et al first confirmed the osteo-inductive property of human demineralized dentin matrix (DDM) histologically. The DDM induced bone and cartilage independently 9 .…”

BMP-2 and type I collagen preservation in human deciduous teeth after demineralization

“…23 Highly mineralized materials cannot be easily resorbed, thus limiting or even hampering their osteointegration and bone formation in vivo. 13,24,25 In this light, demineralization was found to be very promising for overcoming such drawbacks through the improvement of the in vivo performance of tooth derivatives. 26 In this study we evaluated the effects of the demineralization process on morphology and topography as well as on the chemical compositions of tooth particles by means of SEM/EDS analyses.…”