Due to lack of the periodontal ligament, osseointegrated implants, unlike natural teeth, react biomechanically in a different fashion to occlusal force. It is therefore believed that dental implants may be more prone to occlusal overloading, which is often regarded as one of the potential causes for peri-implant bone loss and failure of the implant/implant prosthesis. Overloading factors that m...

The effects of Sarcoma 180, heterologous tissue implantation, and turpent ine treatment upon adrenal and liver adenine nueleotide-metabolizing enzymes were~ investigated. Adrenal 5'-nueleotidase act ivi ty was elevated significantly by progressive S-180 growth. No definite alteration in adrenal 5'-nueleotidase act ivi ty was induced by heterologous tissue implantation. Turpent ine t rea tment d...