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Fig. 4 | Progress in Orthodontics

Fig. 4

From: Posterior teeth angulation in non-extraction and extraction treatment of anterior open-bite patients

Fig. 4

Posterior teeth angulations measurements in the mandibular arch related to mandibular plane (M.P). (1) Md4.MP (°)—long axis (apex to tip) of mandibular 1st premolar to mandibular plane (Go–Gn); (2) Md5.MP (°)—long axis (apex to tip) of mandibular 2nd premolar to mandibular plane (Go–Gn); (3) Md6.MP (°)—long axis (furcation to center of the crown) of mandibular 1st molar to mandibular plane (Go–GN); (4) Md7.MP (°)—long axis (furcation to center of the crown) of mandibular 2nd molar to mandibular plane (Go–Gn)

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