1. An esthetic evaluation of lip-teeth relationships present in the smile;Hulsey;Am J Orthod,1970
2. An evaluation of smiles before and after orthodontic treatment;Mackley;Angle Orthod,1993
3. Standards for case reports regarding gummy smile treatment in literature: a systematic review;Dannan;Clin Surg,2020
4. Influence of sex on the perception of oral and smile esthetics with different gingival display and incisal plane inclination;Geron;Angle Orthod,2005
5. LipStaT: the lip stabilization technique-Indications and guidelines for case selection and classification of excessive gingival display;Bhola;Int J Periodontics Restorative Dent,2015