Term
| Who does "hypoplasica caused by antineoplastic therapy" effect most? |
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Definition
| Clinically obvious alterations most commonly when ginve to pts younger than 12 y/o, most extensively in those unde 5 yrs |
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Term
| When is "hypoplasia caused by antineoplastic therapy" seen? |
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Definition
Most commonly seen post-radiation therapy
May also follow chemotherapy |
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Term
| How severe is "hypoplasia cased by antineoplastic therapy"? |
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Definition
| degree and severity of alterations related to pt's age at treatment, form of therapy, and dose and field of radiation if used |
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Term
| What does "hypoplasia caused by antineoplastic therapy" cause? |
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Definition
| Hypodontia, microdontia, radicular hypoplasia, enamel hypoplasia, occassionally mandibular hypoplasia |
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Term
| Defintion of dental fluorosis |
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Definition
| Defects in enamel due to excessive consumption of fluoride during tooth development |
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Term
| Mechanism of dental fluorosis |
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Definition
| Retention of amelogenin proteins in enamel structure leading to hypomineralized enamel and permanent hypomaturation |
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Term
| Dental fuorosis result on teeth |
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Definition
| increased surface and subsurface porosity |
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Term
| Clinical appearance of dental fluorosis |
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Definition
| initially white chalky areas, progressing to lustering white opacity and then pitting and discoloration |
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Term
| True or False: Teeth affected by dental fluorosis are more prone to caries |
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Definition
| False - typically caries resistant |
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Term
| What does term mottled enamel refer to? |
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Definition
| moderate to severe enamel fluorosis; not so much hypoplasia as hypocalcification and hypomaturation |
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Term
| Can amoxicillin use during early infancy result in dental fluorosis? |
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Definition
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Term
| Defintion of Syphilitic hypoplasia |
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Definition
| hypoplasia of teeth associated with congenital syphilis |
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Term
| What disorder is Hutchinson's incisors and Mulberry molars associated with? |
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Definition
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Term
| Definition of Hutchinson's incisors |
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Definition
| Permanent incisors w/ screwdriver shaped crowns - greater circumference in middle third than in incisal third of tooth; often central notch in middle of incisal edge |
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Term
| Definition of mulberry molars |
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Definition
| constricted occlusal tables w/ disorganized surface anatomy |
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Term
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Definition
| loss of tooth structure caused by tooth-to-tooth contact during occlusion and mastication |
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Term
| True or false: some degree of attrition is physiologic; excessive wear considered pathologic. |
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Definition
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Term
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Definition
| pathologic wearing away of tooth structure or restoration secondary to mechanical action of an external agent |
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Term
| True or false: Aggressive tooth brushing (esp w/ abrasive agent) canNOT cause abrasion |
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Definition
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Term
| Potential causes of abrasion |
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Definition
- pencils, toothpicks, pipe stems, bobby pins
- Chewing tobacco, cracking nuts, dental floss, fingernails, thread
- Demastication (tooth wear from chewing abrasive substances)
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Term
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Definition
| loss of tooth structure caused by a nonbacterial chemical process |
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Term
| Most common cause of erosion |
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Definition
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Term
| Erosion from exposure to gastric secretions is termed - |
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Definition
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Term
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Definition
| Loss of tooth structure from occlusal stress that creates repeated tooth flexure w/ failure of enamel & dentin at a location away from point of loading |
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Term
| Step-by-step pathogenesis of abfraction |
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Definition
- Occlusal forces applied eccentrically to a tooth cause tensile stress concentrated at cervical fulcrum
- This leads to flexure which may produce disruption in chemical bonds of enamel crystals in cervical area
- Dentin is more flexible than enamel and able to withstand great tensile stress
- All this weakens cervical enamel promoting its loss
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Term
| Definition of internal resorption |
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Definition
| Resorption of tooth from inside out mediated by cells of pulp |
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Term
| How does internal resorption occur? |
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Definition
| Most commonly after injury to pulp tissue via physical trauma or caries-related pulpitis and will usually progress until perforation into PDL as long as vital pulp remains |
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Term
| What is associated with Pink Tooth of Mummery? |
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Definition
| Internal resorption - it is when crown is involved may take on a pink hue due to vascular resorption thinning out enamel |
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Term
| Treatment of internal resorption |
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Definition
Endodontic therapy
If perforation of PDL attempt remineralization w/ calcium hydroxide type substance |
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Term
| Definition of external resorption |
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Definition
| resorption of tooth from outside in, mediated initially by cells of PDL |
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Term
| Causes of external resorption |
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Definition
| Excessive mechanical force, trauma, periradicular or periapical inflammatory disease, pressure of impacted tooth, reimplantation of teeth, cysts and tumors |
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Term
| Treatment of external resorption |
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Definition
| Identify cause and try to eliminate |
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Term
| Extrinsic discoloration of teeth caused by... |
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Definition
| Bacterial stins, tobacco products, coffee, meds |
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Term
| Intrinsic discoloration of teeth caused by... |
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Definition
- Congenital erthropoietic porphyria
- Alkaptonuria
- Build-up of bilirubin
- Trauma from deciduous teeth
- Promatous leprosy
- Meds
- Restorative materials
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Term
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Definition
Failure of teeth to erupt, usually due to a physical barrier
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Term
| Most common teeth that are impacted... |
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Definition
| Mandibular 3rd molars, maxillary 3rd molars and maxillary cuspids |
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Term
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Definition
Long-term observations
Ortho assisted eruption
Transplantation
Surgical removal
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Term
| Risks of not intervening with impaction |
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Definition
Crowding of dentition
Resorption, caries, worsening of perio status of adj teeth
dev pathologic condition (infections, cysts, tumors)
Incidence increases w/ age
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Term
| Pathogenesis of impaction |
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Definition
| Ankylosis plays major role |
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