RESUMO
80 extracted human mandible premolars were divided into 10 groups(n =8)based on the post with different tilted angles(0°, buccal 15°and 30°,ligual 15°and 30°).The samples in experiment group were restored with fiber post while in the control group with cast post.Then all the teeth were restored with cast crown and bonded by glass ionomer.Compressive load with the speed of 1.0 mm/min was ap-plied to the restored teeth with a universal material testing machine until failure and the fracture modes were observed.The fracture load of fi-ber post and cast post restoration with the same tilted angles was similar(P >0.05).The main fracture mode of the teeth in all groups was unfavorable tooth fracture.No significant interaction was observed(P =0.217)between the 2 kinds of post and angulation of tilted teeth.
RESUMO
Objective To evaluate the clinical effect of immediate implant restoration in lower posterior teeth . Methods 31 XIVE implants were placed in lower posterior teeth of 31 patients.The temporary fixed resin crowns were fabricated immediately and final restorations were finished in 3~4 months.The control group used nonsub-merged implants and were restored with final crowns in 3~4 months.The tracking survey was taken from 12 to 24 months after final restoration .The patient satisfaction , papilla index score ( PIS ) and implant survival rate were eval-uated between the two groups .Results PIS of patients with immediate restoration reached (2.35 ±0.70) in aver-age compared(1.84 ±0.74) in control group.The patient satisfaction reached (91.5 ±7.5) with immediate resto-ration, compared with VAS score in average of(85.8 ±8.1) in control group.All implants in both groups achieved osseointegration and received 100% survival rate .Conclusion With proper technique in surgical and restoration procedure , immediate restoration after implant insertion in posterior madible has similar clinical success compared with delayed restoration .