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ORAL PATHOLOGY! > Exam 1- Tooth Dev Disturb > Flashcards

Exam 1- Tooth Dev Disturb Flashcards

1
Q

What is the term for a developmentally small tooth?

A

Microdontia

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2
Q

What is the term for a developmentally LARGE tooth? What should we NOT confuse this term with?

A

Macrodontia…don’t confuse with FUSION

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3
Q

Term: Attempted division of tooth germ with incomplete formation of 2 teeth, usually single root.

A

Gemination

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4
Q

Term: Union of two tooth germs by DENTIN. Often with individual roots.

A

Fusion

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5
Q

Gemination: Attempted division of tooth _____ with incomplete formation of 2 teeth, usually how many roots?.

A

germ…usually a SINGLE root

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6
Q

Fusion: Union of two tooth germs by _______. Often with how many roots?

A

DENTIN…usually individual (multiple) roots

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7
Q

Term: Form of fusion where teeth joined by CEMENTUM

A

Concrescence

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8
Q

Concrescence: Form of fusion where teeth joined by ________….WHAT TEETH are most frequently involved?

A

CEMENTUM….Maxillary Molars most frequently involved

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9
Q

Term: Bend or curve in tooth or root…. Possibly due to trauma..Problems with RCT or extraction

A

Dilaceration

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10
Q

Dilaceration: BEND or CURVE in tooth or root….Possibly due to ______…. Problems with WHAT two dental procedures?

A

Trauma….tough with extractions and root canals

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11
Q

What is another term for Dens-in-Dente?

A

Dens invaginatus

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12
Q

What is the etiology of Dens-in-Dente?

A

invagination in enamel organ before calcification

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13
Q

What is the most common tooth to see Dens-in-Dente?

A

maxillary lateral incisions and can be bilateral

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14
Q

Which tooth development anomaly is a sequela of a periapical infection??

A

Dens-in-Dente (dens invaginatus)

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15
Q

How do you treat dens-in-dente?

A

Prophylacticly treat with filling the pit

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16
Q

What is the term for a tooth-like structure in central fossa? Where is this typically found? Can you just take this away with your handpiece?

A

Dens E-vaginatus! mostly found in mandibular PMs…NO don’t just grind away, they can have PULP TISSUE in them…so reduce a little by little.

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17
Q

What are block-shaped teeth with large pulps (“bull-like teeth”)?

A

Taurodontism

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18
Q

Is taurodontism typically found in one or multiple teeth?

A

Yep, can be Either one or multiple teeth

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19
Q

Can taurodontism be isolated or is it associated with syndromes?

A

Yep, it can Either be isolated OR associated with syndromes

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20
Q

BOOM! YOU CAN HELP DIAGNOSE A SYNDROME!!! WHICH SYNDROME IS COMMONLY ASSOCIATED WITH TAURODONTISM???? What % of these patients have taurodontism?

A

Klinefelter’s Syndrome (polyploidy of X chromosome, XXY)…20% have it

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21
Q

What is an excess of enamel at bi or trifurcation of molars at CEJ?

A

an enamel pearl!

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22
Q

Where is an enamel pearl most commonly found? (2)

A

1.At the bi or trifurcation of molars 2.at CEJ

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23
Q

Term: A few or no tooth development

A

Oligo-dontia OR ano-dontia

24
Q

What is the most commonly associated systemic problem with Anodontia?

A

HEREDITARY ECTODERMAL DYSPLASIA

25
Q

Overall there is an evolutionary trend toward developing a _______ amount of teeth!

A

fewer

26
Q

What is the official term for extra teeth? Which arch is it more common in? WHERE is the most common, specific location and what is its special name there?

A

superNumerary teeth….90% of cases in the MAXILLA….Most common location between the maxillary central incisions-named MESIODENS

27
Q

What are the two associated disorders with supernumerary teeth?

A

1.Gardner’s Syndrome (colon cancer) 2.Cleidocranial Dysplasia (no clavicles)

28
Q

What is THE only HEREDITARY disturbance in enamel structure? What are the 3 genetic possibilities?

A

Amelo-genesis imperfecta….1.AD 2.AR 3.X-linked (all of the phenotypic expressions)

29
Q

How many types of amelogenesis imperfect are there?

A

12-15 types

30
Q

What are the three clinical signs of Amelogenesis Imperfecta?

A

1.Hypoplasia 2.Hypocalcificatoin 3.Hypomaturation

31
Q

What are the 3 indications of HEREDITARY amelogenesis imperfecta?

A

1.Effects ALL teeth 2.BOTH arches 3.Family history

32
Q

What are the 3 indications that amelogenesis imperfecta may have been initiated by environmental factors?

A
  1. only SOME teeth affected 2.only in ONE arch 3.no family history
33
Q

HERE COMES THE BOOM! DIG DEEP-D1 STYLE: What are the 7, yes 7 causes of ENVIRONMENTAL ENAMEL DEFECTS (hypoplasia/hypomineralization)????????

A

1.RICKETS 2.EX—AN—THE-mat-ous diseases (viral affecting epithelium) 3.Congenital syphilis 4.Turner’s Tooth (local infection/trauma) 5.Fluorosis 6.TetraCycline 7.Idiopathic

34
Q

What are the two manifestations of congenital syphilis on the teeth?

A

1.Hutchinson’s incisors 2.Mulberry molars

35
Q

What is the typical threshold of Fluoride in the water for fluorosis to occur? Is the discoloring a product of Fluoride?

A

threshold = > 1ppm….discoloring is NOT caused by F-, its from other metals (Fe2+)

36
Q

Dominantly inherited genetic defect of dentin independent or with osteogenesis imperfecta

A

DENTIN-O-GENESIS IMPERFECTA

37
Q

Cool, nerdy extra- Dentin-o-genesis Imperfecta is due to mutation of dentin ______________ DSPP

A

Si-AL-O-phospho-protein

38
Q

In dentinogenesis imperfecta which arch/how many teeth are affected?

A

BOTH arches, ALL teeth

39
Q

Which disease is associated with dentinogenesis imperfecta? What are two manifestations?

A

osteogenesis imperfecta…brittle bones, blue sclera

40
Q

Which abnormality is this describing? grayish to yellowish-brown, translucent, enamel fractures from dentin
(lacks scalloping), exposed dentin prone to attrition

A

dentinogenesis imperfecta

41
Q

Radiographic findings of dentinogenesis imperfecta: Obliteration of _________ ± attrition ± root fractures

A

pulp chambers and canals (FULL of type I collagen!)

42
Q

What is the treatment strategy for a patent with dentinogenesis imperfecta?

A

CROWNS to prevent attrition

43
Q

What is the genetic nature of dentinogenesis imperfecta?

A

Autosomal DOMINANT

44
Q

Autosomal dominant condition characterized by pulpal obliteration with abnormal dentin, defective root formation and tendency for periapical pathology.

A

DENTINAL DYSPLASIA! (look like resorbing primary teeth, no roots)

45
Q

Which teeth and arches are mostly affected by DENTINAL DYSPLASIA?

A

All teeth, both dentitions

46
Q

Which abnormality? Radiographic findings: Obliteration of pulp, short underdeveloped roots, periapical radiolucencies

A

Dentinal Dysplasia

47
Q

Which two tooth anatomical components are affected by Regional OdontoDysplasia? What is the nickname for this condition?

A

BOTH Enamel AND Dentin….Ghost teeth

48
Q

What is the etiology and region affected by Regional OdontoDysplasia? (what is the most common arch)

A

Unknown etiology, affects several teeth in ONE region of the jaws….permanent teeth, unerupted in the MAXILLARY arch

49
Q

Which condition is this? Radiographic findings: Anomalous teeth often with very thin shell of enamel and dentin

A

Regional OdontoDysplasia

50
Q

What are the three types of Disturbances in Eruption?

A

1.Embedded teeth 2.Impacted teeth 3.Ankylosed teeth

51
Q

What is the nickname for embedded teeth? Its due to a lack of ________ force….if its generalized, look for a systemic cause….LIKE:

A

Nickname: Pseudo-Ano-Dontia…..lack of eruptive force….LIKE HYPOTHYROIDISM

52
Q

What are teeth unerupted because of mechanical (tooth) obstruction? What are the 2 most common teeth affected by this eruption disturbance?

A

Impacted teeth…mandiublar 3rd molars and maxillary canines

53
Q

Term: Tooth roots fused to bone, often in primary teeth with underlying succedaneous permanent tooth missing

A

Ankylosed Teeth

54
Q

Ankylosed teeth: Tooth roots fused to bone, often in _______ teeth with underlying succedaneous permanent tooth missing

A

primary

55
Q

What is a unique clinical feature of ankylosed teeth?

A

there is a DISTINCTIVE PERCUSSION

56
Q

What are 2 topics discussed in this deck that are associated with PROMINENT PULP CALCIFICATIONS?

A

1.Dentin Dysplasia (II) 2.Regional OdontoDysplasia

ORAL PATHOLOGY! (40 decks)

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