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A profile of a smile, exhibiting a deviated dental midline about 2 mm to the left (the midline is measured as the mandible in relation to the maxilla.Even though the teeth are in an edge-to-edge position, the teeth are in maximum intercuspation; this patient possesses a Class III occlusion.
Since the mandible can go through a vast number of different movement paths, Posselt decided to start by studying the "border movements", a term he uses to denote the mandible's capacity for movement. Then he compared these with the habitual movements of the mandible. From the investigation, he concluded that:
[1] Marginal A number of different 'margins' are involved in dentistry. The edge of tooth structure that is prepared to meet the edge of a prosthetic crown is called a margin, as is the aforementioned edge of the crown; an example of this usage would be "a poorly fitting crown might exhibit marginal leakage."
Incisors (from Latin incidere, "to cut") are the front teeth present in most mammals.They are located in the premaxilla above and on the mandible below. Humans have a total of eight (two on each side, top and bottom).
Cephalometric analysis depends on cephalometric radiography to study relationships between bony and soft tissue landmarks and can be used to diagnose facial growth abnormalities prior to treatment, in the middle of treatment to evaluate progress, or at the conclusion of treatment to ascertain that the goals of treatment have been met. [5]
There are three mucogingival junctions: on the facial of the maxilla and on both the facial and lingual of the mandible. The palatal gingiva of the maxilla is continuous with the tissue of the palate, which is bound down to the palatal bones. Because the palate is devoid of freely moveable alveolar mucosa, there is no mucogingival junction. [1]
It is located between the lateral aspect of the mandible and the medial aspect of the masseter muscle and its investing fascia. The term is derived from sub-meaning "under" in Latin and masseteric which refers to the masseter muscle. The submasseteric space is one of the four compartments of the masticator space. [1]
The boundaries of each pterygomandibular space are: [1] the posterior border of the buccal space anteriorly; the parotid gland posteriorly; the lateral pterygoid muscle superiorly; the inferior border of the mandible (lingual surface) inferiorly; the medial pterygoid muscle medially (the space is superficial to medial pterygoid)