Download PDF
CC BY-NC-ND 4.0 · Eur J Dent 2017; 11(02): 216-220
DOI: 10.4103/ejd.ejd_70_17
Original Article
Dental Investigation Society

Effect of clasp type and pullout location on clasp retention in different environment: In vitro study

Bilal Mourshed
1   Department of Prosthetic Dentistry, Al-Farabi College, Riyadh, Saudi Arabia
,
Fuad Abdo Al-Sabri
2   Department of Restorative Dentistry, Al-Farabi College, Riyadh, Saudi Arabia
3   Department of Operative Dentistry, Faculty of Dentistry, Thamar University, Thamar, Yemen
,
Nashwan Ahmed Qaed
2   Department of Restorative Dentistry, Al-Farabi College, Riyadh, Saudi Arabia
,
Nader Alaizari
4   Department of Oral Medicine and Diagnostic Sciences, Al-Farabi College, Riyadh, Saudi Arabia
,
Hashem Motahir Al-Shamiri
5   Department of Oral and Maxillofacial Surgery, Al-Farabi College, Riyadh, Saudi Arabia
,
Amal Alfaqih
6   Ebtisama Dental Center, Private Clinic, Sana’a, Yemen
› Author Affiliations
Further Information

Publication History

Publication Date:
23 September 2019 (online)

Also available at
   Permissions and Reprints

ABSTRACT

Objective: The purpose of this study was to investigate the importance of pullout location and clasp types in two different environments to dislodge the clasp. Materials and Methods: Mandibular test models with natural premolars and molar teeth were used to test four types of clasp (each 12) (Akers, Rest plate Akers, Half and Half, and Ring clasp) with three different pullout location for each type (ring on the rest, loop on the saddle, and wax arising from both rests) in dry and natural fresh saliva environment. Each clasp was pulled out 10 times with a crosshead speed of 10 mm/min, and the force required to withdraw each was measured. Statistical Analysis Used: A one-way ANOVA and Tukey test were used. Results: The ring on the saddle pullout location has the highest retention force while ring on the rest was the lowest. In addition, ring clasp has the highest retention force. Conclusion: Clasp type and pullout location had a significant effect on the retentive force.

Key words:

Akers - clasp - pullout location - removable partial denture - retention - saliva
 

  • REFERENCES

  • 1 Cicciù M, Cervino G, Bramanti E, Lauritano F, Lo Gudice G, Scappaticci L. et al. FEM analysis of mandibular prosthetic overdenture supported by dental implants: Evaluation of different retention methods. Comput Math Methods Med 2015; 2015-943839
    Google Scholar
  • 2 Cicciu M, Bramanti E, Matacena G, Guglielmino E, Risitano G. FEM evaluation of cemented-retained versus screw-retained dental implant single-tooth crown prosthesis. Int J Clin Exp Med 2014; 7: 817-25
    PubMedGoogle Scholar
  • 3 Cicciù M, Risitano G, Maiorana C, Franceschini G. Parametric analysis of the strength in the ''Toronto'' osseous-prosthesis system. Minerva Stomatol 2009; 58: 9-23
    PubMedGoogle Scholar
  • 4 Lauritano F, Runci M, Cervino G, Fiorillo L, Bramanti E, Cicciù M. Three-dimensional evaluation of different prosthesis retention systems using finite element analysis and the Von Mises stress test. Minerva Stomatol 2016; 65: 353-67
    PubMedGoogle Scholar
  • 5 Cicciù M, Bramanti E, Cecchetti F, Scappaticci L, Guglielmino E, Risitano G. FEM and Von Mises analyses of different dental implant shapes for masticatory loading distribution. Oral Implantol (Rome) 2014; 7: 1-10
    PubMedGoogle Scholar
  • 6 Dula LJ, Shala KS, Pustina-Krasniqi T, Bicaj T, Ahmedi EF. The influence of removable partial dentures on the periodontal health of abutment and non-abutment teeth. Eur J Dent 2015; 9: 382-6
    Article in Thieme ConnectPubMedGoogle Scholar
  • 7 Bilgin MS, Baytaroglu EN, Erdem A, Dilber E. A review of computer-aided design/computer-aided manufacture techniques for removable denture fabrication. Eur J Dent 2016; 10: 286-91
    Article in Thieme ConnectPubMedGoogle Scholar
  • 8 Phoenix RD, Cagna DR, DeFreest CF. Stewart's Clinical Removable Partial Prosthodontics. 4th ed.. Chicago: Quintessence Publishing Co., Inc.; 2008
    Google Scholar
  • 9 Ahmad I, Sherriff M, Waters NE. The effect of reducing the number of clasps on removable partial denture retention. J Prosthet Dent 1992; 68: 928-33
    CrossrefPubMedGoogle Scholar
  • 10 Frank RP, Nicholls JI. A study of the flexibility of wrought wire clasps. J Prosthet Dent 1981; 45: 259-67
    CrossrefPubMedGoogle Scholar
  • 11 Sato Y. Clinical methods for adjusting retention force of cast clasps. J Prosthet Dent 1999; 82: 557-61
    CrossrefPubMedGoogle Scholar
  • 12 Arda T, Arikan A. An In vitro comparison of retentive force and deformation of acetal resin and cobalt-chromium clasps. J Prosthet Dent 2005; 94: 267-74
    CrossrefPubMedGoogle Scholar
  • 13 Kim D, Park C, Yi Y, Cho L. Comparison of cast Ti-Ni alloy clasp retention with conventional removable partial denture clasps. J Prosthet Dent 2004; 91: 374-82
    CrossrefPubMedGoogle Scholar
  • 14 Marei MK. Measurement (In vitro) of the amount of force required to dislodge specific clasps from different depths of undercut. J Prosthet Dent 1995; 74: 258-63
    CrossrefPubMedGoogle Scholar
  • 15 Rodrigues RC, Ribeiro RF, de Mattos Mda G, Bezzon OL. Comparative study of circumferential clasp retention force for titanium and cobalt-chromium removable partial dentures. J Prosthet Dent 2002; 88: 290-6
    CrossrefPubMedGoogle Scholar
  • 16 Firtell DN. Effect of clasp design upon retention of removable partial dentures. J Prosthet Dent 1968; 20: 43-52
    CrossrefPubMedGoogle Scholar
  • 17 Ahmad I, Waters NE. Value of guide planes in partial denture retention. J Dent 1992; 20: 59-64
    CrossrefPubMedGoogle Scholar
  • 18 LaVere AM. Clasp retention: The effects of five variables. J Prosthodont 1993; 2: 126-31
    CrossrefPubMedGoogle Scholar
  • 19 Soo S, Leung T. Hidden clasps versus C clasps and I bars: A comparison of retention. J Prosthet Dent 1996; 75: 622-5
    CrossrefPubMedGoogle Scholar
  • 20 Carr AB, Brown DT. McCracken's Removable Partial Prosthodontics. 12th ed.. St. Louis: Elsevier Mosby; 2011
    Google Scholar
  • 21 Sato Y, Abe Y, Yuasa Y, Akagawa Y. Effect of friction coefficient on Akers clasp retention. J Prosthet Dent 1997; 78: 22-7
    CrossrefPubMedGoogle Scholar
  • 22 Bridgeman JT, Marker VA, Hummel SK, Benson BW, Pace LL. Comparison of titanium and cobalt-chromium removable partial denture clasps. J Prosthet Dent 1997; 78: 187-93
    CrossrefPubMedGoogle Scholar
  • 23 Rantonen PJ, Meurman JH. Viscosity of whole saliva. Acta Odontol Scand 1998; 56: 210-4
    CrossrefPubMedGoogle Scholar
  • 24 Kusy RP, Whitley JQ. Influence of fluid media on the frictional coefficients in orthodontic sliding. Semin Orthod 2003; 9: 281-9
    CrossrefGoogle Scholar