A comparison of tapered and cylindrical miniscrew stability

Seong Hun Yoo, Young Chel Park, ChungJu Hwang, Ji Young Kim, Eun Hee Choi, Jung Yul Cha

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

OBJECTIVES: This study compared the stability of tapered miniscrews with cylindrical miniscrews. MATERIALS/METHODS: One hundred and five tapered and 122 cylindrical self-drilling miniscrews were placed into the maxillary and mandibular buccal alveolar areas of 132 patients (43 males and 89 females). The insertion torque and removal torque were measured and Periotest values (PTVs) were recorded at implantation. RESULTS: The success rates of the tapered and cylindrical miniscrews examined were similar. In the maxilla, the insertion torque of the tapered miniscrews (8.3 Ncm) was significantly higher than that of the cylindrical miniscrews (6.3 Ncm) (P < 0.05). The PTVs of the tapered miniscrews were statistically significantly lower in the maxilla (P < 0.05). The removal torque values showed no significant difference between the tapered and cylindrical miniscrews in the upper and lower buccal areas (P > 0.05). CONCLUSIONS: Tapered miniscrews had higher initial stability when compared to cylindrical miniscrews, whereas the clinical success rates and removal torques were similar between the two designs. The long-term stability is not directly affected by the miniscrew design.

Original languageEnglish
Pages (from-to)557-562
Number of pages6
JournalEuropean Journal of Orthodontics
Volume36
Issue number5
DOIs
Publication statusPublished - 2014 Oct 1

Fingerprint

Torque
Cheek
Maxilla

All Science Journal Classification (ASJC) codes

  • Orthodontics

Cite this

Yoo, S. H., Park, Y. C., Hwang, C., Kim, J. Y., Choi, E. H., & Cha, J. Y. (2014). A comparison of tapered and cylindrical miniscrew stability. European Journal of Orthodontics, 36(5), 557-562. https://doi.org/10.1093/ejo/cjt092
Yoo, Seong Hun ; Park, Young Chel ; Hwang, ChungJu ; Kim, Ji Young ; Choi, Eun Hee ; Cha, Jung Yul. / A comparison of tapered and cylindrical miniscrew stability. In: European Journal of Orthodontics. 2014 ; Vol. 36, No. 5. pp. 557-562.
@article{1eebbba6ba5748699e41b4bd0e4a290c,
title = "A comparison of tapered and cylindrical miniscrew stability",
abstract = "OBJECTIVES: This study compared the stability of tapered miniscrews with cylindrical miniscrews. MATERIALS/METHODS: One hundred and five tapered and 122 cylindrical self-drilling miniscrews were placed into the maxillary and mandibular buccal alveolar areas of 132 patients (43 males and 89 females). The insertion torque and removal torque were measured and Periotest values (PTVs) were recorded at implantation. RESULTS: The success rates of the tapered and cylindrical miniscrews examined were similar. In the maxilla, the insertion torque of the tapered miniscrews (8.3 Ncm) was significantly higher than that of the cylindrical miniscrews (6.3 Ncm) (P < 0.05). The PTVs of the tapered miniscrews were statistically significantly lower in the maxilla (P < 0.05). The removal torque values showed no significant difference between the tapered and cylindrical miniscrews in the upper and lower buccal areas (P > 0.05). CONCLUSIONS: Tapered miniscrews had higher initial stability when compared to cylindrical miniscrews, whereas the clinical success rates and removal torques were similar between the two designs. The long-term stability is not directly affected by the miniscrew design.",
author = "Yoo, {Seong Hun} and Park, {Young Chel} and ChungJu Hwang and Kim, {Ji Young} and Choi, {Eun Hee} and Cha, {Jung Yul}",
year = "2014",
month = "10",
day = "1",
doi = "10.1093/ejo/cjt092",
language = "English",
volume = "36",
pages = "557--562",
journal = "European Journal of Orthodontics",
issn = "0141-5387",
publisher = "Oxford University Press",
number = "5",

}

A comparison of tapered and cylindrical miniscrew stability. / Yoo, Seong Hun; Park, Young Chel; Hwang, ChungJu; Kim, Ji Young; Choi, Eun Hee; Cha, Jung Yul.

In: European Journal of Orthodontics, Vol. 36, No. 5, 01.10.2014, p. 557-562.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A comparison of tapered and cylindrical miniscrew stability

AU - Yoo, Seong Hun

AU - Park, Young Chel

AU - Hwang, ChungJu

AU - Kim, Ji Young

AU - Choi, Eun Hee

AU - Cha, Jung Yul

PY - 2014/10/1

Y1 - 2014/10/1

N2 - OBJECTIVES: This study compared the stability of tapered miniscrews with cylindrical miniscrews. MATERIALS/METHODS: One hundred and five tapered and 122 cylindrical self-drilling miniscrews were placed into the maxillary and mandibular buccal alveolar areas of 132 patients (43 males and 89 females). The insertion torque and removal torque were measured and Periotest values (PTVs) were recorded at implantation. RESULTS: The success rates of the tapered and cylindrical miniscrews examined were similar. In the maxilla, the insertion torque of the tapered miniscrews (8.3 Ncm) was significantly higher than that of the cylindrical miniscrews (6.3 Ncm) (P < 0.05). The PTVs of the tapered miniscrews were statistically significantly lower in the maxilla (P < 0.05). The removal torque values showed no significant difference between the tapered and cylindrical miniscrews in the upper and lower buccal areas (P > 0.05). CONCLUSIONS: Tapered miniscrews had higher initial stability when compared to cylindrical miniscrews, whereas the clinical success rates and removal torques were similar between the two designs. The long-term stability is not directly affected by the miniscrew design.

AB - OBJECTIVES: This study compared the stability of tapered miniscrews with cylindrical miniscrews. MATERIALS/METHODS: One hundred and five tapered and 122 cylindrical self-drilling miniscrews were placed into the maxillary and mandibular buccal alveolar areas of 132 patients (43 males and 89 females). The insertion torque and removal torque were measured and Periotest values (PTVs) were recorded at implantation. RESULTS: The success rates of the tapered and cylindrical miniscrews examined were similar. In the maxilla, the insertion torque of the tapered miniscrews (8.3 Ncm) was significantly higher than that of the cylindrical miniscrews (6.3 Ncm) (P < 0.05). The PTVs of the tapered miniscrews were statistically significantly lower in the maxilla (P < 0.05). The removal torque values showed no significant difference between the tapered and cylindrical miniscrews in the upper and lower buccal areas (P > 0.05). CONCLUSIONS: Tapered miniscrews had higher initial stability when compared to cylindrical miniscrews, whereas the clinical success rates and removal torques were similar between the two designs. The long-term stability is not directly affected by the miniscrew design.

UR - http://www.scopus.com/inward/record.url?scp=84928346472&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84928346472&partnerID=8YFLogxK

U2 - 10.1093/ejo/cjt092

DO - 10.1093/ejo/cjt092

M3 - Article

VL - 36

SP - 557

EP - 562

JO - European Journal of Orthodontics

JF - European Journal of Orthodontics

SN - 0141-5387

IS - 5

ER -