Dentosphere : World of Dentistry

# Fovea palatine situated in hard palate are significant as:  A. Termination of maxillary denture B. Opening of minor salivary gland ducts  C. Indicates closure of mid palatine raphe  D. Opening of greater palatine canal The correct answer is B. Opening of minor salivary gland ducts.  Palatine fovea These are the orifices of common collecting ducts of minor palatine salivary glands. The fovea palatini are two depressions that lie bilateral to the midline of the palate, at the approximate junction between the soft and hard palate. They denote the sites of opening of ducts of small mucous glands of the palate. They are often useful in the identification of the vibrating line because they generally occur with in 2 mm of the vibrating line. The hamular process, or hamulus, is a bony projection of the medial plate of the pterygoid bone and is located distal to the maxillary tuberosity. Lying between the maxillary-tuberosity and the ...

# In Gillies Temporal approach for reduction of zygomatic arch fracture, Rowes elevator is placed between:   A. Superficial facia and temporal fascia   B. Temporal bone and temporalis muscle   C. Temporal fascia and Temporalis muscle D. Skin and superficial fascia The correct answer is C. Temporal Fascia and Temporal muscle.  In Gillies temporal fascia for reduction of zygomatic arch fracture, elevator is placed between temporal fascia and Temporalis muscle. The temporal fascia is attached to the zygomatic arch and the temporal muscle passes downward medial to the fascia to be attached to the coronoid process.Between these two structures a natural anatomical space exists into which an instrument can be inserted and it can be utilized to elevate the displaced zygoma on its arch into position. Technique: The hair is shaved from the temporal region of the scalp. The external auditory meatus is plugged with cotton to preve...

# Excess height of the posterior palatal seal of a complete maxillary denture will usually result in which of the following? A. Increased retention B. A tingling or tickling sensation C. Unseating of the denture D. Gagging The correct answer is C. Unseating of the denture. Over contouring or excessive beading of the posterior palatal seal causes too much pressure to be exerted on the palatal tissues resulting in the unseating of upper dentures.  The posterior palatal seal is typically placed approximately on the vibrating line between the hard and soft palate and provides a physiologically acceptable tissue pressure within the compressible portion of the soft palate to attain retention and peripheral seal.  Over extending the coverage of seal will cause gaggling and painful swallowing for the part of the patient.  CLICK HERE FOR MORE MCQS

# A denture that is fabricated with excessive Vertical Dimension of Occlusion (VDO) may result in: A. Inefficient mastication B. Perioral rhytides (wrinkles) C. Trauma to supporting soft tissue D. Sagging oral commissures The correct answer is C. Trauma to supporting soft tissue.  Perioral rhytides, sagging oral commisures and deep labiomental groove is an indication that the vertical dimension of occlusion is insufficient.  Excessive vertical dimension of occlusion (VDO) causes pain in the soft tissue under the denture because excessive force is created during occlusion.  Excessive VDO manifests as a "full mouth" as well as a difficulty pronouncing words.  CLICK HERE TO PRACTICE MORE MCQS