It's kind of hard to say which model is most reliable. Taken care of properly, they'll all hold true. But there are some models more prone to certain things (subframe, etc) than others, but again, the main thing is how well it was looked after by the person before you.
obÂ·tuÂ·raÂ·tor forÂ·aÂ·men. A large, oval or irregularly triangular aperture in the hip bone, the margins of which are formed by the pubis and the ischium; it is closed by the obturator membrane, except for a small opening for the passage of the obturator vessels and nerve. Synonym(s): foramen obturatum [TA] .
For larger defect, prosthetic rehabilitation seems to be a better alternative, since more risks are. involved for survival of the graft. The prosthesis that is fabricated to repair the defect is called as a maxillary. obturator. An obturator (Latin: obturare, to stop up) is a disc or plate, natural or artificial, which closes an opening. or defect of the maxilla as a result of a cleft palate or partial or total removal of maxilla for a tumour mass.2 Two.