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22. [Lips and gingiva--the outer framework of the teeth. The patient's face show that harmony of tooth shape is not enough]. Sieber C Dent Labor (Munch); 1987 May; 35(5):607-11. PubMed ID: 3475218 [No Abstract] [Full Text] [Related]
24. [Line of cutting edges of the upper teeth and its conformity with the contours of nose and lower lip while smiling]. Ralev R; Kalăcev A Stomatologiia (Sofiia); 1989; 71(1):22-7. PubMed ID: 2520868 [TBL] [Abstract][Full Text] [Related]
25. Characterization of posed smile by using visual analog scale, smile arc, buccal corridor measures, and modified smile index. Krishnan V; Daniel ST; Lazar D; Asok A Am J Orthod Dentofacial Orthop; 2008 Apr; 133(4):515-23. PubMed ID: 18405815 [TBL] [Abstract][Full Text] [Related]
26. The periodontal factor in esthetic smile design--altering gingival display. Bitter RN Gen Dent; 2007 Nov; 55(7):616-22. PubMed ID: 18069504 [TBL] [Abstract][Full Text] [Related]
27. Smile esthetics: perception and comparison of treated and untreated smiles. Işiksal E; Hazar S; Akyalçin S Am J Orthod Dentofacial Orthop; 2006 Jan; 129(1):8-16. PubMed ID: 16443472 [TBL] [Abstract][Full Text] [Related]