What are the stress bearing areas in the upper jaw?

Posterior Palatal Seal Area Tuberosity Maxillary Tuberosity The maxillary tuberosity is the most posterior part of the alveolar ridge; it lies distal to the position of the last molar. The maxillary tuberosity is important from a denture standpoint because it is considered a primary stress- bearing area. 22.

What are the primary denture support areas on the maxilla and mandible?

Palatal Seal Area Tuberosity Maxilla-Anatomic Landmarks Tuberosity – is an important primary denture support area . It also provides resistance to horizontal movements of the denture. Posterior Palatal Seal Area – Is distal to the junction of the hard and soft palate at the vibrating line . 10.

Is maxillary tuberosity a primary stress bearing area?

fovea palatina. Primary stress-bearing areas: • Hard palate. The postero-lateral slopes of the residual alveolar ridge Secondary stress-bearing areas: • Rugae • Maxillary tuberosity.

What are the relief areas in maxilla?

ACCORDING TO BOUCHER’s 13 EDITION MAXILLARY ARCH STRESS BEARING AREA RELIEF AREA PRIMARY: FIRM TUBEROSITY, HARD PALATE ON EITHER SIDEOF PALATAL RAPHE SECONDARY: RUGAE, ALVEOLAR RIDGE PALATAL TORUS, MEDIAN PALATAL RAPHE ,FOVEA PALATINI.

What is the maxillary tuberosity?

The maxillary tuberosity is the most hind-most (distal) aspect of the upper jaw (maxilla), housing the sockets of the upper wisdom teeth, with its back (posterior) border curving upward and distally.

What are denture bearing areas?

Those surfaces of the teeth and edentulous ridges covered by a denture.

What are the denture bearing areas?

What is the retromolar pad area?

The retromolar pad is a mass of soft tissue located at the posterior end of the mandibular alveolar ridge. This pad covers the underlying bone with surrounding attached muscle fibers. Sicher described retromolar pad as a triangular soft elevation of mucosa that lies distal to third molar [1].

Why Midpalatine raphe is relief area?

Mid palatine raphe is the median suture area covered by a thin submucousa and the mucosa layer is practically in contact with the underlying bone. For the reason the soft tissue covering the median palatal sutures is non resilient and may need to be relived to avoid trauma from the denture base.

What are relief areas?

A relief area is an area on a plaster model defined to relieve pressure on the tissues underneath a denture base; a space is created using a tin foil spacer adapted to the model surface and removed after processing.

What are stress bearing areas?

Primary stress bearing areas of maxilla are crest of alveolar ridge and the horizontal plate of palatine bone and in the mandible; it is the buccal shelf area. Secondary stress bearing areas of the maxillary foundation are rugae area and the slopes of the ridge in the mandibular foundation.