Document Type : Original Article
Authors
1 Assistant professor of Orthodontics, Faculty of Dentistry, Birjand University of Medical Sciences, Birjand, Iran
2 Post graduate student, Department of Orthodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran
3 Undergraduate Student of Dentistry, Faculty of Dentistry, Birjand University of Medical Sciences, Birjand, Iran
Abstract
Background: There is a continuous debate on the issue of comparison between extraction and non-extraction treatment results in terms of subsequent soft tissue changes for Class II division 1 patients. So far, however, far too little attention has been paid to photographic evaluation of treatment results.
Aims: The aim of this was to assess the impact of extraction and non-extraction treatment of Class II division 1malocclusion on soft tissue profile by means of pre- and post- treatment photographs.
Materials and methods: The pre- and post- treatment profile photographs of 41 borderline Class II division 1malocclusion patients (ANB ≤5 degrees, and overjet ≤ 5 mm) were evaluated. The photographs were digitized into the computer and 19 angular measurements were evaluated. Paired t-tests and Independent-sample t-tests were performed to compare the pre- and post- treatment values between the extraction and non- extraction groups. The level of significance was set to be P < .05.
Results: Significant differences between pre- and post- treatment values in extraction group existed for Z angle and N‑Sn‑Pog. In non- extraction group significant differences observed in N‑Pn‑Pog, G‑Sn‑Pog, N‑Sn‑Pog and N‑Sn‑B.When comparing the extraction and non-extraction groups before and after treatment the results showed that the only significant difference was in PFH/AFH proportion.
Conclusions: The results of this study for both extraction and non- extraction group were straightening and improvement of soft tissue profile without significant impact on lips or nasolabial angle.
Keywords
Main Subjects
- Oliveira PG, Tavares RR, Freitas JC. Assessment of motivation, expectations and satisfaction of adult patients submitted to orthodontic treatment. Dental press journal of orthodontics. 2013;18:81-7. doi: 10.1590/s2176 94512013000200018.
- Samsonyanová L, Broukal Z. A systematic review of individual motivational factors in orthodontic treatment: facial attractiveness as the main motivational factor in orthodontic treatment. International journal of dentistry. 2014 May 20;2014. doi: 10.1155/2014/938274.
- Al Taki A, Guidoum A. Facial profile preferences, self-awareness and perception among groups of people in the United Arab Emirates. Journal of orthodontic science. 2014 Apr;3(2):55. doi: 10.4103/2278-0203.132921.
- Dhiman S, Maheshwari S. A dilemma in orthodontics: Extractions in borderline cases. Journal of Advanced Clinical and Research Insights. 2015;2(1):36-9. doi:10.15713/ins.jcri.40.
- Almurtadha RH, Alhammadi MS, Fayed MM, AbouEl-Ezz A, Halboub E. Changes in soft tissue profile after orthodontic treatment with and without extraction: A systematic review and meta-analysis. Journal of Evidence Based Dental Practice. 2018 Sep 1;18(3):193-202. doi: 10.1016/j.jebdp.2017.09.002.
- Ackerman JL, Proffit WR, Sarver DM. The emerging soft tissue paradigm in orthodontic diagnosis and treatment planning. Clinical orthodontics and research. 1999 May;2(2):49-52. doi: 10.1111/ocr.1999.2.2.49.
- Burstone CJ. The integumental profile. American journal of orthodontics. 1958 Jan 1;44(1):1-25.
- Park YC, Burstone CJ. Soft-tissue profile-fallacies of hard-tissue standards in treatment planning. American Journal of Orthodontics and Dentofacial Orthopedics. 1986 Jul 1;90(1):52-62. doi: 10.1016/0889-5406(86)90027-2.
- Fernández‐Riveiro P, Smyth‐Chamosa E, Suárez‐ Quintanilla D, Suárez‐Cunqueiro M. Angular photogrammetric analysis of the soft tissue facial profile. The European Journal of Orthodontics. 2003 Aug 1;25(4):393-9. doi: 10.1093/ejo/25.4.393.
- Malkoç S, Demir A, Uysal T, Canbuldu N. Angular photogrammetric analysis of the soft tissue facial profile of Turkish adults. The European Journal of Orthodontics. 2009 Apr 1;31(2):174-9. doi: 10.1093/ejo/cjn082.
- de Carvalho Rosas Gomes L, Horta KO, Gandini Jr LG, Gonçalves M, Gonçalves JR. Photographic assessment of cephalometric measurements. The Angle Orthodontist. 2013 Nov;83(6):1049-58. doi: 10.2319/120712-925.1.
- Aksakalli S, Demir A. Facial soft tissue changes after orthodontic treatment. Nigerian journal of clinical practice. 2014 May 28;17(3):282-6. doi: 10.4103/1119-3077.130226.
- Janson G, Fuziy A, de Freitas MR, Henriques JF, de Almeida RR. Soft-tissue treatment changes in Class II Division 1 malocclusion with and without extraction of maxillary premolars. American journal of orthodontics. doi: 10.1016/j.ajodo.2007.05.012.
- Verma SL, Sharma VP, Singh GP, Sachan K. Comparative assessment of soft-tissue changes in Class II Division 1 patients following extraction and non-extraction treatment. Dental Research Journal. 2013 Nov;10(6):764. PMID: 24379865.
- Janson G, Mendes LM, Junqueira CH, Garib DG. Soft-tissue changes in Class II malocclusion patients treated with extractions: a systematic review. European journal of orthodontics. 2016 Dec 1;38(6):631-7. doi: 10.1093/ejo/cjv083.
- Bishara SE, Cummins DM, Jakobsen JR, Zaher AR. Dentofacial and soft tissue changes in Class II, division 1 cases treated with and without extractions. American Journal of Orthodontics and Dentofacial Orthopedics. 1995 Jan 1;107(1):28- 37. doi: 10.1016/s0889-5406(95)70154-0.
- Combrink FJ, Harris AM, Steyn CL, Hudson AP. Dentoskeletal and soft-tissue changes in growing class II malocclusion patients during nonextraction orthodontic treatment. SADJ. 2006 Sep;61(8):344-50. PMID: 17165248.
- Janson G, Lenza EB, Francisco R, Aliaga-Del Castillo A, Garib D, Lenza MA. Dentoskeletal and soft tissue changes in class II subdivision treatment with asymmetric extraction protocols. Progress in orthodontics. 2017 Dec;18(1):1-0. doi: 10.1186/s40510- 017-0193-x.
- Drobocky OB, Smith RJ. Changes in facial profile during orthodontic treatment with extraction of four first premolars. American Journal of Orthodontics and Dentofacial Orthopedics. 1989 Mar 1;95(3):220-30. doi: 10.1016/0889- 5406(89)90052-8.
- Paquette DE, Beattie JR, Johnston Jr LE. A long-term comparison of nonextraction and premolar extraction edgewise therapy in “borderline” Class II patients. American Journal of Orthodontics and Dentofacial Orthopedics. 1992 Jul 1;102(1):1-4. doi: 10.1016/0889-5406(92)70009-Y.
- Young TM, Smith RJ. Effects of orthodontics on the facial profile: a comparison of changes during nonextraction and four premolar extraction treatment. American Journal of Orthodontics and Dentofacial Orthopedics. 1993 May 1;103(5):452-8. doi: 10.1016/S0889-5406(05)81796-2.
- Bishara SE, Cummins DM, Jakobsen JR, Zaher AR. Dentofacial and soft tissue changes in Class II, division 1 cases treated with and without extractions. American Journal of Orthodontics and Dentofacial Orthopedics. 1995 Jan 1;107(1):28- 37. doi: 10.1016/s0889-5406(95)70154-0.
- James RD. A comparative study of facial profiles in extraction and nonextraction treatment. American journal of orthodontics and dentofacial orthopedics. 1998 Sep 1;114(3):265-76. doi: 10.1016/s0889-5406(98)70208-2.
- Saelens NA, De Smit AA. Therapeutic changes in extraction versus non-extraction orthodontic treatment. The European Journal of Orthodontics. 1998 Jun 1;20(3):225-36. doi: 10.1093/ejo/20.3.225.
- Finnöy JP, Wisth PJ, Böe OE. Changes in soft tissue profile during and after orthodontic treatment. The European Journal of Orthodontics. 1987 Jan 1;9(1):68-78. doi: 10.1093/ejo/9.1.68.
- Looi LK, Mills JR. The effect of two contrasting forms of orthodontic treatment on the facial profile. American Journal of Orthodontics. 1986 Jun 1;89(6):507-17. doi: 10.1016/0002-9416(86)90009- 6.
- Al-Sibaie S, Hajeer MY. Assessment of changes following en-masse retraction with mini-implants anchorage compared to two-step retraction with conventional anchorage in patients with class II division 1 malocclusion: a randomized controlled trial. European journal of orthodontics. 2014 Jun 1;36(3):275-83. doi: 10.1093/ejo/cjt046.
- Upadhyay M, Yadav S, Nagaraj K, Uribe F, Nanda R. Mini-implants vs fixed functional appliances for treatment of young adult Class II female patients: a prospective clinical trial. The Angle Orthodontist. 2012 Mar;82(2):294-303. doi: 10.2319/042811-302.1.
- Rains MD, Nanda R. Soft-tissue changes associated with maxillary incisor retraction. American journal of orthodontics. 1982 Jun 1;81(6):481-8. doi: 10.1016/0002-9416(82)90427-4.
- Hershey HG. Incisor tooth retraction and subsequent profile change in postadolescent female patients. American Journal of Orthodontics. 1972 Jan 1;61(1):45-54. doi: 10.1016/0002-9416(72)90175-3.
- Xu TM, Liu Y, Yang MZ, Huang W. Comparison of extraction versus nonextraction orthodontic treatment outcomes for borderline Chinese patients. American journal of orthodontics and dentofacial orthopedics. 2006 May 1;129(5):672-7. doi: 10.1016/j.ajodo.2005.12.007.
- Statistical Methods for Medical and Biological Students. Br Med J. 1940 Sep 14;2(4158):358–9. PMCID: PMC2179091.