This work is licensed under the Creative Commons Attribution 4.0 International License.
Baumrind S, Korn EL, Boyd RL, Maxwell R. The decision to extract: Part 1 – Interclinician agreement. Am J Orthod Dentofacial Orthop 1996; 109: 297–309.Search in Google Scholar
Weintraub JA, Vig PS, Brown C, Kowalski CJ. The prevalence of orthodontic extractions. Am J Orthod Dentofacial Orthop 1989; 96: 462–6.Search in Google Scholar
Nance HN. The removal of second premolars in orthodontic treatment. Am J Orthod 1949; 35: 685–96.Search in Google Scholar
de Castro N. Second-premolar extraction in clinical practice. Am J Orthod 1974; 65: 115–37.Search in Google Scholar
Williams R, Hosila FJ. The effect of different extraction sites upon incisor retraction. Am J Orthod 1976; 69: 388–410.Search in Google Scholar
Steyn CL, du Preez RJ, Harris AM. Differential premolar extractions. Am J Orthod Dentofacial Orthop 1997; 112: 480–6.Search in Google Scholar
Proffit WR. Contemporary Orthodontics. 3rd ed. St Louis: Mosby: 2003; p. 309–10.Search in Google Scholar
Schwab DT. Extraction effects on the dental profile in borderline cases. Angle Orthod 1963; 33: 120–2.Search in Google Scholar
Creekmore TD. Where teeth should be positioned in the face and jaws and how to get them there. J Clin Orthod 1997; 31: 586–608.Search in Google Scholar
Schoppe RJ. An analysis of second premolar extraction procedures. Angle Orthod 1964; 34: 292–302.Search in Google Scholar
Schwab DT. The borderline patient and tooth removal. Am J Orthod 1971; 59: 126–45.Search in Google Scholar
Riedel RA. An analysis of dentofacial relationships. Am J Orthod 1957; 43: 103–19.Search in Google Scholar
Bloom LA. Perioral profile changes in orthodontic treatment. Am J Orthod 1961; 47: 371–9.Search in Google Scholar
Rudee DA. Proportional profile changes concurrent with orthodontic therapy. Am J Orthod 1964; 50: 421–34.Search in Google Scholar
Lew KK. Profile changes following orthodontic treatment of bimaxillary protrusion in adults with Begg appliance. Eur J Orthod 1989; 11: 375–81.Search in Google Scholar
Diels RM, Kalra V, DeLoach N, Powers M, Nelson SS. Changes in soft tissue profile of African-Americans following extraction treatment. Angle Orthod 1995; 65: 285–92.Search in Google Scholar
Shearn BN, Woods MG. An occlusal and cephalometric analysis of lower first and second premolar extraction effects. Am J Orthod Dentofacial Orthop 2000; 117: 351–61.Search in Google Scholar
Ong HB, Woods MG. An occlusal and cephalometric analysis of maxillary first and second premolar extraction effects. Angle Orthod 2001; 71: 90–102.Search in Google Scholar
Wholley CJ, Woods MG. The effects of commonly prescribed premolar extraction sequences on the curvature of the upper and lower lips. Angle Orthod 2003; 73: 386–95.Search in Google Scholar
Carter NE. First premolar extractions and fixed appliances in Class II division 1 malocclusion. Br J Orthod 1988; 15: 1–10.Search in Google Scholar
Luppanapornlarp S, Johnston LE. The effects of premolar-extraction: a long-term comparison of outcomes in “clear-cut” extraction and nonextraction Class II patients. Angle Orthod 1993; 63: 257–72.Search in Google Scholar
Saelens NA, De Smit AA. Therapeutic changes in extraction versus non-extraction orthodontic treatment. Eur J Orthod 1998; 20: 225–36.Search in Google Scholar
Lai J, Ghosh J, Nanda RS. Effect of orthodontic therapy on the facial profile in long and short vertical facial patterns. Am J Orthod Dentofacial Orthop 2000; 118: 505–13.Search in Google Scholar
Subtelny JD. The soft tissue profile, growth and treatment changes. Angle Orthod 1961; 31: 105–22.Search in Google Scholar
Hershey HG. Incisor tooth retraction and subsequent profile change in postadolescent female patients. Am J Orthod 1972; 61: 45–54.Search in Google Scholar
Rains MD, Nanda R. Soft-tissue changes associated with maxillary incisor retraction. Am J Orthod 1982; 81: 481–8.Search in Google Scholar
Talass MF, Talass L, Baker RC. Soft-tissue profile changes resulting from retraction of maxillary incisors. Am J Orthod Dentofacial Orthop 1987; 91: 385–94.Search in Google Scholar
Finnoy JP, Wisth PJ, Boe OE. Changes in soft tissue profile during and after orthodontic treatment. Eur J Orthod 1987; 9: 68–78.Search in Google Scholar
Valentim ZL, Capelli J, Almeida MA, Bailey LJ. Incisor retraction and profile changes in adult patients. Int J Orthodon Orthognath Surg 1994; 9: 31–6.Search in Google Scholar
Caplan MJ, Shivapuja PK. The effect of premolar extractions on the soft-tissue profile in adult African American females. Angle Orthod 1997; 67: 129–36.Search in Google Scholar
Oliver BM. The influence of lip thickness and strain on upper lip response to incisor retraction. Am J Orthod 1982; 82: 141–9.Search in Google Scholar
Bravo LA. Soft tissue facial profile changes after orthodontic treatment with four premolars extracted. Angle Orthod 1994; 64: 31–42.Search in Google Scholar
Nanda R. Biomechanical aspects of extraction versus non-extraction therapy. In: Bolender CJ, Bonnoure GM, Barat Y, eds. Extraction versus Non-extraction. Strasburg: Sid: 1995; 88–102.Search in Google Scholar
Woods MG. Overbite correction and sagittal changes: late mixed-dentition treatment effects. Aust Orthod J 2001; 17: 69–80.Search in Google Scholar
Woods MG. Lower incisor changes on basal bone and in relation to the lower face: combined growth and treatment effects in the late mixed-dentition. Aust Orthod J 2002; 18: 7–18.Search in Google Scholar
Woods MG. Mandibular arch dimensional and positional changes in late mixed-dentition Class I and II treatment. Am J Orthod Dentofacial Orthop 2002; 122: 180–8.Search in Google Scholar
Moseling KP, Woods MG. Lip curve changes in females with premolar extraction or non-extraction treatment. Angle Orthod 2004; 74: 51–62.Search in Google Scholar