Limitation of mouth opening caused by osteochondroma of the coronoid process.

Background: Osteochondroma at the level of the coronoid process is unusual, causing a slowly progressive facial asymmetry and limitation of mouth opening. Histologically, it is a bone tumor covered by a thin capsule of cartilage. We present a literature review of cases published to date and present a new case in which osteochondroma originating in the coronoid process was associated with the formation of a cyst at the body of the zygoma, necessitating the reconstruction of the body of the zygoma.

The meridian incision: a technical modification in the conservative surgery of the impacted maxillary canine.

We describe a technical modification of the apical repositioning flap in the conservative surgical treatment of the impacted canine in buccal position. This amendment improves the tooth's eventual visualization, thus permitting a better evolutive follow-up of its eruption process and, most importantly, providing the tooth with buccal attached gingiva that will accompany it in its downward progression, procuring a cervical contour without retraction, a satisfactory esthetic outcome and a physiologically correct periodontal ridge. The traditional apical repositioning flap also bestows the canine with attached gingiva; however, since the flap is sutured apically and its width is significantly smaller than the remaining surgical defect, the wound's closure is compromised at one of its edges and often requires healing by second intention at an undesired location next to the buccal sulcus.