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A Comparative Study to Evaluate the Effectiveness of 3D Digital Models and Study Cast to Measure Anteroposterior Anchorage Loss in Patients Treated with Preadjusted Edgewise Appliance


Affiliations
1 Dental College, Ibn Sina National College of Medical Sciences, Jeddah, Saudi Arabia
 

Anchorage loss is an important parameter in controlling the outcome of orthodontic treatment. Lateral cephalogram and study model analysis are routinely used to monitor anchorage loss. Study is to evaluate the effectiveness of 3D digital model and study cast to measure maxillary molar anchorage loss in patients treated with fixed orthodontic appliance. A total of 31 high anchorage patients who were treated with pre adjusted edgewise appliance for their malocclusions were included in the study. Amount of horizontal anchorage loss was measured by two methods: Study cast and 3D digital model super imposition. The anterior palatal rugae area was taken as a reference point for comparative measurements. Paired t-test was performed to compare the mean values of anchorage loss measured on both methods. When we compared the mean anchorage loss of two methods, it was found that there were no statistically significant differences observed for both the right side (t= 0.513, p>0.05) and left side (t= -0.081, p>0.05). The spearman correlation between two methods showed a very strong correlation in both right (r=0.919) and left side (r=0.906) which was statistically significant (p <0.001). The present study shows that the measurement of anchorage loss using 3D digital superimpositions is equally reliable as that of study models. Thus, 3D digital models present as an alternative method to the measurement of anteroposterior anchorage loss.

Keywords

Anchorage Loss, Fixed Orthodontics, 3D Digital Models, Study Cast.
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  • Venkatesh S, Rozario J, Ganeshkar SV, Ajmera S. Comparative evaluation of sagittal anchorage loss in lingual and labial appliances during space closure: A pilot study. APOS Trends in Orthodontics. 2014 Dec 29; 5(1):33-7. https://doi.org/10.4103/2321-1407.148027
  • Siva Krishna P, Prasad M, Gowri Sankar S, Reddy GV. Anchorage In Orthodontics: A Literature Review. Annals and Essences of Dentistry. 2016; 8(2):7-19
  • Doppel. An investigation of maxillary superimposition techniques using metallic implants. Am J Orthod Dentofacial Orthop. 1994; 105:161-8. https://doi.org/10.1016/S0889-5406(94)70112-1
  • Hoggan BR, Sadowsky C. The use of palatal rugae for the assessment of anteroposterior tooth movements. Am J Orthod Dentofacial Orthop. 2001; 119:482-8. https://doi.org/10.1067/mod.2001.113001 PMid:11343019
  • Abizadeh N, Moles DR, O’Neill J, Noar JH. Digital versus plaster study models: How accurate and reproducible are they? J Orthod. 2012 Sep 1; 39(3):151-9. https://doi.org/10.1179/1465312512Z.00000000023PMid:22984099
  • Thiruvenkatachari B, Al-Abdallah M, Akram NC, Sandler J, O’Brien K. Measuring 3-imensionaltooth movement with a 3-dimensional surface laser scanner. Am J Orthod Dentofacial Orthop. 2009; 135:480-5. https://doi.org/10.1016/j.ajodo.2007.03.040 PMid:19361734
  • Cho MY, Choi JH, Lee SP, Baek SH. Three-dimensional analysis of the tooth movement and arch dimension changes in Class I malocclusions treated with first premolar extractions: a guideline for virtual treatment planning. Am J Orthod Dentofacial Orthop. 2010; 138:747-57. https://doi.org/10.1016/j.ajodo.2008.11.033 PMid:21130334
  • Sjögren AP1, Lindgren JE, Huggare JA. Orthodontic study cast analysis--reproducibility of recordings and agreement between conventional and 3D virtual measurements. J Digit Imaging. 2010 Aug; 23(4):482-92. https://doi.org/10.1007/s10278-009-9211-y PMid:19526268 PMCid:PMC3046658
  • Aragón ML, Pontes LF, Bichara LM. Flores-Mir Validity and reliability of intraoral scanners compared to conventional gypsum models measurements: A systematic review. C2, Normando Eur J Orthod. 2016 Aug; 38(4):429-34. https://doi.org/10.1093/ejo/cjw033 PMid:27266879
  • Keul C, Güth JF. Accuracy of full-arch digital impressions: an in vitro and in vivo comparison. Clin Oral Investig. 2020 Feb; 24(2):735-45. https://doi.org/10.1007/s00784-01902965-2 PMid:31134345
  • Nambiar S, Mogra S, Shetty S, Shetty S. Assessment of anteroposterior and transverse first premolar extraction changes using palatal rugae and comparative analysis with lateral cephalogram in Angle’s Class I and II patients: An institutional retrospective study. J Orthod Res. 2013; 1:45-51. https://doi.org/10.4103/2321-3825.116284
  • Bell A, Ayoub AF, Siebert P. Assessment of the accuracy of a three-dimensional imaging system for archiving dental study models. J Orthod. 2003 Sep; 30(3):219-23. https://doi.org/10.1093/ortho/30.3.219 PMid:14530419
  • Saleh WK, Ariffin E, Sherriff M, Bister D. Accuracy and reproducibility of linear measurements of resin, plaster, digital and printed study-models. J Orthod. 2015 Oct 2; 42(4):301-6. https://doi.org/10.1179/14653133 15Y.0000000016 PMid:26216658
  • Mangano F, Gandolfi A, Luongo G, Logozzo S. Intraoral scanners in dentistry: a review of the current literature. BMC oral health. 2017 Dec 1; 17(1):149. https://doi.org/10.1186/s12903-017-0442-x PMid:29233132 PMCid:PMC5727697
  • Flügge TV, Schlager S, Nelson K, Nahles S, Metzger MC. Precision of intraoral digital dental impressions with iTero and extraoral digitization with the iTero and a model scanner. Am J Orthod Dentofacial Orthop. 2013; 144:471-8. https://doi.org/10.1016/j.ajodo.2013.04.017 PMid:23992820
  • Vogel AB, Kilic F, Schmidt F, Rübel S, Lapatki BG. Optical 3D scans for orthodontic diagnostics performed on fullarch impressions. Completeness of surface structure representation. J Orofac Orthop. 2015; 76:493-507. https://doi.org/10.1007/s00056-015-0309-1 PMid:26250455
  • Sanches JO, Santos-Pinto LA, Santos-Pinto AD, Grehs B, Jeremias F. Comparison of space analysis performed on plaster vs. digital dental casts applying Tanaka and Johnston’s equation. Dental Press J Orthod. 2013 Feb; 18(1):12833. https://doi.org/10.1590/S2176-94512013000100024 PMid:23876960
  • Rheude B, Sadowsky PL, Ferriera A, Jacobson A. An evaluation of the use of digital study models in orthodontic diagnosis and treatment planning. Angle Orthod. 2005; 75:300-4.
  • Ahlholm P, Sipilä K Vallittu P, Jakonen M, Kotiranta U. Digital versus conventional impressions in fixed prosthodontics: A review. Prosthodont. 2018 Jan; 27(1):3541. doi: 10.1111/jopr.12527. https://doi.org/10.1111/jopr.12527 PMid:27483210
  • Grünheid T, McCarthy SD, Larson BE. Clinical use of a direct chairside oral scanner: An assessment of accuracy, time, and patient acceptance. Am J Orthod Dentofacial Orthop. 2014; 146:673-862. https://doi.org/10.1016/j.ajodo.2014.07.023 PMid:25439218
  • Naidu D, Freer TJ. Validity, reliability, and reproducibility of the IOC intraoral scanner: A comparison of tooth widths and Bolton ratios. Am J Orthod Dentofacial Orthop. 2013; 144:304-310. https://doi.org/10.1016/j.ajodo.2013.04.011 PMid:23910212

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  • A Comparative Study to Evaluate the Effectiveness of 3D Digital Models and Study Cast to Measure Anteroposterior Anchorage Loss in Patients Treated with Preadjusted Edgewise Appliance

Abstract Views: 359  |  PDF Views: 151

Authors

Kavitha Oadthurai Marusamy
Dental College, Ibn Sina National College of Medical Sciences, Jeddah, Saudi Arabia
Raghad Khalid Abuarab
Dental College, Ibn Sina National College of Medical Sciences, Jeddah, Saudi Arabia
Meelad Mahmood Bin Jahlan
Dental College, Ibn Sina National College of Medical Sciences, Jeddah, Saudi Arabia
Lina Waseem Qureshi
Dental College, Ibn Sina National College of Medical Sciences, Jeddah, Saudi Arabia
Rahaf Hamed Alahmadi
Dental College, Ibn Sina National College of Medical Sciences, Jeddah, Saudi Arabia

Abstract


Anchorage loss is an important parameter in controlling the outcome of orthodontic treatment. Lateral cephalogram and study model analysis are routinely used to monitor anchorage loss. Study is to evaluate the effectiveness of 3D digital model and study cast to measure maxillary molar anchorage loss in patients treated with fixed orthodontic appliance. A total of 31 high anchorage patients who were treated with pre adjusted edgewise appliance for their malocclusions were included in the study. Amount of horizontal anchorage loss was measured by two methods: Study cast and 3D digital model super imposition. The anterior palatal rugae area was taken as a reference point for comparative measurements. Paired t-test was performed to compare the mean values of anchorage loss measured on both methods. When we compared the mean anchorage loss of two methods, it was found that there were no statistically significant differences observed for both the right side (t= 0.513, p>0.05) and left side (t= -0.081, p>0.05). The spearman correlation between two methods showed a very strong correlation in both right (r=0.919) and left side (r=0.906) which was statistically significant (p <0.001). The present study shows that the measurement of anchorage loss using 3D digital superimpositions is equally reliable as that of study models. Thus, 3D digital models present as an alternative method to the measurement of anteroposterior anchorage loss.

Keywords


Anchorage Loss, Fixed Orthodontics, 3D Digital Models, Study Cast.

References





DOI: https://doi.org/10.18311/ajprhc%2F2020%2F25127