Deas DE, Mackey SA, Sagun RS Jr, et al. Crown lengthening in the maxillary anterior region: a 6-month prospective clinical study [J]. Int J Periodontics Restorative Dent, 2014, 34(3)∶365-373
[2]
Hollar S. Establishing gingival symmetry when placing anterior direct nanohybrid composite restorations [J]. Compend Contin Educ Dent, 2013, 34(5)∶13-17
[3]
Holyoak M. Smile design: rules, tools and strategies to help plan aesthetic restorative dentistry [J]. Prim Dent J, 2013, 2(4)∶38-43
[4]
Wang X, Fan D, Swain MV, et al. A systematic review of all-ceramic crowns: clinical fracture rates in relation to restored tooth type [J]. Int J Prosthodont, 2012, 25(5)∶441-450
[5]
Kina JR, Dos Santos PH, Kina EF, et al. Periodontal and prosthetic biologic considerations to restore biological width in posterior teeth [J]. J Craniofac Surg, 2011, 22(5)∶1913-1916
