Mandibular Hader Bar Attachment Overdenture Wearers: A Five-year Longitudinal Clinical Evaluation by Electromyographic Analysis


  • V.Y.W.S. Dental College & Hospital, Department of Prosthetic Dentistry, Amravati, India
  • P.D.M. Medical College, Amravati, India


Introduction: Electromyography is used to evaluate the muscle activity of temporalis and masseter muscles in a comparative clinical research on effectiveness of masticatory cycle by conventional overdenture and use of overdenture with Hader bar attachment for five years established on a scientific level and is first of its kind.

Aim: Thepurpose of this studyis todeterminethe responseof co-ordinationof stomatognathic systemand the functional status of long-termoverdenture use,which can be recorded inEMG.

Material and Methods: Ten patients were treated with maxillary conventional complete denture and mandibular overdenture. Electrical activity of masseter and temporal muscles were obtained in 3 groups. (Gp. I) After insertion of conventional overdenture with copings; (Gp. II) Overdenture with Hader bar attachment and (Gp.III) five years of use of overdenture with Hader bar attachment.

Results and Conclusion: The mean and standard deviation for all the patients showed an increase in muscular activity of temporalis and masseter muscles after long-term rehabilitation (x = 0.405; 0.407 and s = 0.0668; 0.1344 respectively, p = 0.0042 and 0.0074 which is <0.05). This study concludes that overdenture with Hader bar system, after five years of function provide a sound justification for a viable alternative treatment modality to provide overdenture with attachment service to patients.


Hader Bar, Overdenture, E.m.g. Analysis, Coping & Attachment

Subject Discipline


Full Text:


Misch C E, Contemporary implant dentistry 3rd ed. Elsevier, Hader Clip/Bar,vol. 102;299.

Rissin L, House JE. Manly: clinical comparison of masticatory performance and electromyographic activity of patients with complete dentures, overdentures and natural teeth. J Prosthet Dent. 1978;39, 5, 508.

Ahlgren J. Mechanism of mastication. Acta Odonat. Scand. 1966;24(Suppl 44):1-109.

Brill N. Adaptation and hybrid prosthesis. J Prosthet Dent. 1955;5:811.

Meng TR. Biting force in overdenture. J Dental Res. 1983;62:249.

Sposetti VJ, Gibbs CH. Alderson: bite force and muscle activity in overdenture wearers before and after attachment placement. J Prosthet Dent. 1986;55:265.

Morrow RM, et al. Immediate interim tooth e supported complete dentures. J Prosthet Dent. 1973;30:685-700.

Thayer HH, Caputo AA. Effects of overdenture upon remaining oral structures. J Prosthet Dent. 1977;37:374-381.

Crum RJ, Rooney GE. Alveolar bone loss in overdentures e 5 years study. J Prosthet Dent. 1978;40:610-613.

Miller PA. Complete dentures supported by natural teeth. J Prosthet Dent. 1959;8:924-928.

Dodge CA. Prevention of complete denture problems by the use of overdentures. J Prosthet Dent. 1973;30:403-411.

Toolson LB, Smith DE. A five year longitudinal study of patients treated with overdentures. Prosthet Dent. 1983;49:749-756.

Langer Y, Langer A. Root retained overdenture. J Prosthet Dent. 1991;66:784-789.

Gibbs CH, et al. Comparison of typical chewing pattern in normal children and adults. JADA. 1982;105:33-42.


  • There are currently no refbacks.