<prompt> While pronouncing S, T, D, N, Z sounds, tip of tongue makes contact with:Anterior 23rd of plateMaxillary caninesInner 23rd of lower lipDoes not make any contact  <response>: Linguopalatal sounds Anterior Palate:The linguopalatal sounds are C soft, D, T, N, Z and RProduced by: When the tip of the tongue contacts the anterior portion of the palate or the lingual side of anterior teeth.Importance of Linguopalatal sounds: When the denture base in the rugae area is too thick and can produce a similar effect. S sounds produced by the position of the tongue so that air stream released through a small gap between tongue and rugae, S will sound as SH when anterior teeth are anteroposteriorly displaced. 