Lec 3 Radiotherapy Involving the Oral Cavity Flashcards
ORAL MUCOSA:
• _______ composed of rapidly dividing, radiosensitive progenitor cells
• By the end of the second week of therapy, the cell death induces an inflammatory response and the mucous membranes begin to show areas of redness and inflammation called as _______? Which is most severe ______ (before/after/during?) radiotherapy.
• Secondary yeast infection by ____________ is a common complication and may require treatment.
- basal layer
- mucositis
- after
- Candida albicans
6 oral complications after radiotherapy?
- taste loss
- mucositis
- hyposalivation
- radiation caries
- trismus
- susceptibility to osteoradionecrosis
Sensitive to radiation.
Taste buds
Loss of taste occurs in the _____ or _____ week of radiography.
2nd or 3rd
TRUE OR FALSE
Taste loss is REVERSIBLE.
TRUE
TRUE OR FALSE
- Xerostomia is also known as dry mouth.
- Radiation caries is aggravated by xerostomia.
TRUE
TRUE
Highly sensitive to radiation.
Salivary glands
Rampant form of dental decay.
Radiation caries
4 effects of radiotherapy on the TEETH?
- Radiation affects tooth development
- Irradiation affects the tooth bud
- Malformations
- Retard or abort root formation.
An area of exposed irradiated bone tissue that fails to heal over a period of three months, without residual or recurrent tumor; and when other causes of osteonecrosis have been excluded
Osteoradionecrosis
Osteoradionecrosis:
- Manifests ___ to ___ months following radiation treatment.
- __% to __% incidence for convention radiotherapy.
- More frequent on the ________ (maxilla/mandible?)
- 6-12 months
- 5-7%
- mandible
2 effects of radiotherapy on the masculature?
(1) Contracture and (2) trismus of the muscles of mastication.
Which muscles are affected in radiotherapy? (2)
Masseter
Pterygoid
