title: Evaluation of palatal plate thickness of maxillary prosthesis on phonation- a comparative clinical study.
abstract: BACKGROUND
  Prosthodontic treatment involves clinical procedures which influence speech performance directly or indirectly. Prosthetic rehabilitation of missing teeth with partial or complete maxillary removable dentures influences the individual voice characteristics like Phonation, resonance etc.
  
  
  OBJECTIVE
  To evaluate the effect of Acrylic palatal plate thickness (1mm-3mm) of maxillary prosthesis on phonation.
  
  
  METHODS
  Twelve subjects were selected randomly between the age group of 20-25 years who have full complement of teeth and have no speech problems. Speech evaluation was done under four experimental conditions i.e. Without any experimental acrylic palatal plate (control), with experimental acrylic palatal plates of thickness 1 mm, 2 mm and 3 mm respectively. The speech material for phonation test consisted of Vowels sounds /a/, /i/, and /o/. Speech analysis to assess phonation was done using digital acoustic analysis (PRAAT software). The obtained results were statistically analyzed by One-way ANOVA and Tukey's multiple post-hoc for comparison of four experimental conditions with respect to different vowel sounds.
  
  
  RESULTS
  Mean harmonics to noise ratio (HNR) values obtained for all the Experimental conditions did not show significant difference (p>0.05). In conclusion, an increase in the thickness of the acrylic palatal plate of maxillary prosthesis for about 1 mm - 3mm in complete or partial maxillary removable dentures resulted in no significant effect on phonation of vowel sounds /a/, /i/ and /o/.
  
  
  CONCLUSIONS
  Increasing the thickness of the palatal plate from 1 mm to 3 mm has not shown any significant effect on the phonation.
authors: Assistant Professor, Department of Prosthodontics, Sibar Institute of Dental Sciences , Guntur, India .
authors: Srujana
authors: S
authors: Zakkula
authors: Professor, Department of Prosthodontics, Sibar Institute of Dental Sciences , Guntur, India .
authors: Sreedevi
authors: S
authors: B
authors: Professor and HOD, Department of Prosthodontics, Sibar Institute of Dental Sciences , Guntur, India .
authors: Gopinadh
authors: G
authors: Anne
authors: Professor, Department of Prosthodontics, Sibar Institute of Dental Sciences , Guntur, India .
authors: Prakash
authors: P
authors: Manne
authors: Assistant Professor, Department of Prosthodontics, Sibar Institute of Dental Sciences , Guntur, India .
authors: Swetha Hima
authors: SH
authors: Bindu O
authors: Assistant Professor Department of Prosthodontics, Sibar Institute of Dental Sciences , Guntur, India .
authors: Jyothi
authors: J
authors: Atla
authors: PG Student, Department of Prosthodontics, Sibar Institute of Dental Sciences , Guntur, India .
authors: Sneha
authors: S
authors: Deepthi
authors: PG Student, Department of Prosthodontics, Sibar Institute of Dental Sciences , Guntur, India .
authors: Krishna
authors: K
authors: Chaitanya A
keywords: Acoustic analysis; Experimental Palatal Plate; Phonation; Phonetics