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Published in: Clinical Oral Investigations 12/2019

01-12-2019 | Silicone | Original Article

Accuracy of orthodontic mini-implants placed at the anterior palate by tooth-borne or gingiva-borne guide support: a cadaveric study

Authors: Stephan Christian Möhlhenrich, Maximilian Brandt, Kristian Kniha, Andreas Prescher, Frank Hölzle, Ali Modabber, Michael Wolf, Florian Peters

Published in: Clinical Oral Investigations | Issue 12/2019

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Abstract

Objective

The aim of this cadaveric study was to measure the transfer accuracy of orthodontic mini-implant placement at the anterior palate depending on tooth-borne or gingiva-borne guide support.

Materials and methods

Forty orthodontic mini-implants were placed paramedian in the anterior palate of 20 cadaver heads using tooth-borne (TBG) or gingiva-borne guides (GBG). Placement was planned after superimposition of lateral cephalograms and corresponding plaster models. After mini-implant placement, digital impressions were taken with scanbodies. For the measurement of both linear and angle deviations, virtual planning models and postoperative oral scans were compared using automatic surface registration based on an iterative closest point algorithm.

Results

Statistical differences between TBG and GBG were detected for lateral deviations 0.88 mm (SD 0.46) versus 1.65 mm (SD 1.03) (p = .004) and sagittal angular deviations 3.67° (SD 2.25) versus 6.46° (SD 5.5) (p = .043). No differences were found for vertical deviations 2.34 mm (SD 0.74) versus 2.14 mm (SD 0.73) (p = .40) and transverse angular deviations 3.60° (SD 2.89) versus 4.06° (SD 3.04) (p = .62).

Conclusions

The use of surgical guides based on silicone provides sufficient control of orthodontic mini-implant placement and is comparable to CAD/CAM templates. However, when compared with guided dental implantology, the planned mini-implant position is more inaccurate. However, accuracy can be significantly increased by guide extension involving the teeth. Clinical investigations have to prove if the accuracy is sufficient for receiving an orthodontic appliance.

Clinical relevance

The use of lateral cephalograms and plaster models for silicone guide construction leads to lower radiation exposure and provides sufficient accuracy for palatal orthodontic mini-implant placement.
Literature
7.
go back to reference Wehrbein H, Glatzmaier J, Mundwiller U, Diedrich P (1996) The Orthosystem--a new implant system for orthodontic anchorage in the palate. J Orofac Orthop 57:142–153CrossRef Wehrbein H, Glatzmaier J, Mundwiller U, Diedrich P (1996) The Orthosystem--a new implant system for orthodontic anchorage in the palate. J Orofac Orthop 57:142–153CrossRef
8.
go back to reference Gracco A, Lombardo L, Cozzani M, Siciliani G (2006) Quantitative evaluation with CBCT of palatal bone thickness in growing patients. Prog Orthod 7:164–174PubMed Gracco A, Lombardo L, Cozzani M, Siciliani G (2006) Quantitative evaluation with CBCT of palatal bone thickness in growing patients. Prog Orthod 7:164–174PubMed
9.
go back to reference Bernhart T, Vollgruber A, Gahleitner A, Dortbudak O, Haas R (2000) Alternative to the median region of the palate for placement of an orthodontic implant. Clin Oral Implants Res 11:595–601CrossRef Bernhart T, Vollgruber A, Gahleitner A, Dortbudak O, Haas R (2000) Alternative to the median region of the palate for placement of an orthodontic implant. Clin Oral Implants Res 11:595–601CrossRef
12.
go back to reference Ludwig B, Glasl B, Bowman SJ, Wilmes B, Kinzinger GS, Lisson JA (2011) Anatomical guidelines for miniscrew insertion: palatal sites. J Clin Orthod 45:433–441 quiz 467PubMed Ludwig B, Glasl B, Bowman SJ, Wilmes B, Kinzinger GS, Lisson JA (2011) Anatomical guidelines for miniscrew insertion: palatal sites. J Clin Orthod 45:433–441 quiz 467PubMed
13.
go back to reference Hourfar J, Kanavakis G, Bister D, Schatzle M, Awad L, Nienkemper M, Goldbecher C, Ludwig B (2015) Three dimensional anatomical exploration of the anterior hard palate at the level of the third ruga for the placement of mini-implants--a cone-beam CT study. Eur J Orthod 37:589–595. https://doi.org/10.1093/ejo/cju093 CrossRefPubMed Hourfar J, Kanavakis G, Bister D, Schatzle M, Awad L, Nienkemper M, Goldbecher C, Ludwig B (2015) Three dimensional anatomical exploration of the anterior hard palate at the level of the third ruga for the placement of mini-implants--a cone-beam CT study. Eur J Orthod 37:589–595. https://​doi.​org/​10.​1093/​ejo/​cju093 CrossRefPubMed
19.
go back to reference Maino BG, Paoletto E, Lombardo L 3rd, Siciliani G (2016) A three-dimensional digital insertion guide for palatal miniscrew placement. J Clin Orthod 50:12–22PubMed Maino BG, Paoletto E, Lombardo L 3rd, Siciliani G (2016) A three-dimensional digital insertion guide for palatal miniscrew placement. J Clin Orthod 50:12–22PubMed
24.
go back to reference Wassell RW, Barker D, Walls AW (2002) Crowns and other extra-coronal restorations: impression materials and technique. Br Dent J 192(679–84):687–690 Wassell RW, Barker D, Walls AW (2002) Crowns and other extra-coronal restorations: impression materials and technique. Br Dent J 192(679–84):687–690
25.
go back to reference Kanomi R (1997) Mini-implant for orthodontic anchorage. J Clin Orthod 31:763–767PubMed Kanomi R (1997) Mini-implant for orthodontic anchorage. J Clin Orthod 31:763–767PubMed
26.
go back to reference Nienkemper M, Pauls A, Ludwig B, Wilmes B, Drescher D (2012) Multifunctional use of palatal mini-implants. J Clin Orthod 46:679–686 quiz 703-4PubMed Nienkemper M, Pauls A, Ludwig B, Wilmes B, Drescher D (2012) Multifunctional use of palatal mini-implants. J Clin Orthod 46:679–686 quiz 703-4PubMed
28.
go back to reference Tosun T, Keles A, Erverdi N (2002) Method for the placement of palatal implants. Int J Oral Maxillofac Implants 17:95–100PubMed Tosun T, Keles A, Erverdi N (2002) Method for the placement of palatal implants. Int J Oral Maxillofac Implants 17:95–100PubMed
Metadata
Title
Accuracy of orthodontic mini-implants placed at the anterior palate by tooth-borne or gingiva-borne guide support: a cadaveric study
Authors
Stephan Christian Möhlhenrich
Maximilian Brandt
Kristian Kniha
Andreas Prescher
Frank Hölzle
Ali Modabber
Michael Wolf
Florian Peters
Publication date
01-12-2019
Publisher
Springer Berlin Heidelberg
Published in
Clinical Oral Investigations / Issue 12/2019
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-019-02885-1

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