A pine is a coniferous trees in the genus Pinus, in the family Pinaceae. There are about 115 species of pines worldwide, although different authorities accept between 105 and 125 species.
1 The superior gluteal nerve and the nerve to quadratus femoris/inferior gemellus share the same nerve roots (L4, L5 and S1).  Similarly, the inferior gluteal nerve and the nerve to obturator internus/superior gemellus also share the same nerve roots (L5, S1 and S2).
The inferior alveolar nerve block is the most common technique used in dentistry. Despite its importance, it is associated with a failure rate of 15-20% a figure which represents the highest percentage of all clinical failures achieved using local anesthesia.he most important clinical landmarks used in the location of the inferior alveolar nerve block are the coronoid notch and the pterygomandibular raphe. The preferred site of needle insertion lies between these two landmarks and the point of insertion is determined by simple measurements.