Observations made from animal experiments have implicated jiggling forces' in the aetiology of some infra-bony defects. However, this article develops the hypothesis that advanced, localized bone defects may develop when teeth are overloaded and that these changes occur in patients who suffer from only a mild gingival inflammation.
copulation refers to sexual intercourse. the male copulatory organ is the penis, and it is responsible for the deposition of sperm into the vagina.
the testes are responsible for the production of sperm and testosterone, the scrotum is a sack of skin contains the testes.
the vas deferens, or sperm ducts transfer the sperm from the epididymis to the ejaculatory ducts.