Effect of chronic stress on implant osseointegration into rat's mandible
Acta cir. bras
; 30(9): 598-603, Sep. 2015. tab, ilus
Article
in En
| LILACS
| ID: lil-761494
Responsible library:
BR1.1
ABSTRACT
PURPOSE:
To compare chronic physical stressed with normal tense animals regarding implant osseointegration in the rat mandible.METHODS:
Thirty six Wistar rats were anesthesiaded and blunt instruments were used to expose and empty their alveolar inferior nerve. One implant (2.2 x 4mm) was installed into the mandibular canal. Following 72 hours, all rats were equally divided in Control Group analyzed in 18 days (CG18); Control Group analyzed in 33 days (CG33); Stressed Group with stress during 18 days (SG18) and Stressed Group with stress during 33 days (SG33) - The animals from Stressed Groups (CG 18 and CG33) were placed individually in plastic pipes (PVC) during 12 hours daily to physical restraint. Histomorphometric analysis included bone-implant-contact (BIC) and bone area (BA).RESULTS:
In relation to BIC - CG18 (49.8+20.3); SG18 (29.0+16.5) - and BA - CG18 (50.13+21.2); SG18 (23.8+7.8)-, there was a bone repair delayed in SG18 when compared with CG18 (p<0.05). After 33 days, BIC - CG33 (59.6+26.8); SG33 (49.52+17.3)- and BA - CG33 (41.90+17.4); SG33 (43.91+14.7)- showed no difference between groups (p>0.05).CONCLUSION:
Chronic physical stress interfere with the initial stage of osseointegration in the rat mandible, but not the final process.Key words
Full text:
1
Index:
LILACS
Main subject:
Stress, Physiological
/
Osseointegration
/
Implants, Experimental
/
Dental Implantation, Endosseous
/
Mandible
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Acta cir. bras
Journal subject:
CIRURGIA GERAL
/
Procedimentos Cir£rgicos Operat¢rios
Year:
2015
Type:
Article