Dentition Flashcards
What have brachyodont teeth?
Humans, carnivores, pigs
What have hypsodont teeth?
Horses, rodents, lagomorphs
Most mammals are diphyodont, what are the two sets of teeth this includes?
1st set- Deciduous
2nd set- permanent
When do deciduous teeth start to appear?
2-4 weeks of age
When are deciduous teeth completed?
8 weeks
Eruption of permanent incisors in dogs?
4-5 months
Eruption of permanent canine teeth in dogs?
5-6 months of age
Eruption of permanent premolar teeth in dogs?
4-5 months of age
Eruption of permanent molar teeth in dogs?
6-7 months of age
How many teeth do dogs and cats have?
Dogs - 42
Cats - 30
What is the dental formula for dogs?
2 ( I 3/3, C 1/1. PM 4/4, M 2/3)
What is the dental formula for cats?
2 ( I 3/3, C 1/1, PM 3/2, M 1/1 )
In the Triadan system of naming teeth, the 100 series are where?
Maxillary right quadrant
In the Triadan system, where are the 200 series teeth found?
Maxillary left quadrant
In the Triadan system, where are the 300 series teeth found?
Mandibular in left quadrant
In the Triadan system, where are the 400 series teeth found?
Mandibular right quadrant
What permanent teeth have 1 root?
Incisors, canine, premolar 1
What permanent teeth have 2 roots?
Premolar 2&3
Premolar 4
Molar 1, 2, 3
What is the largest tooth?
Carnassial teeth
What specific teeth are the carnassial teeth?
Fourth upper premolar and First lower premolar
Describe normal occlusion
Upper incisors close just in front of lower incisors
Upper fourth premolar should come to the outside of the first lower molar.
Asymmetrical Skeletal Maloclussion, AKA Wry mouth, is indicated when?
Elongation of half of the head
Jaw is under or over shot
Only effects one side or the other
Can be genetic or from trauma
Extra permanent teeth are also known as what?
Supernumerary teeth
Term for missing teeth
Adontia
Term for teeth that do not line up
Malocclusions
Term for when the upper jaw is longer than the lower jaw; overshot
Brachygnathism
Term for when the mandible is longer than the maxilla; under bite
Prognathism
Term for the portion above the gum line covered by enamel
crown
The hardest substance in the body
Enamel
Soft tissues of the tooth
Pulp
Substance of the tooth that is sensitive to heat/cold
Dentin
Branching or fork like part of the tooth
Furcation
Portion of the tooth that is attached to alveolar bone by the periodontal ligament
Cementum
Most terminal portion of the root
Apex
Periodontium, the tissues that surround the teeth consists of what?
Gingiva and periodontal ligament
Functions to hold the tooth in the socket; shock absorber
Periodontal ligament
A dense bone which surrounds roots within 1-2 mm of the cementoenamel junction
Alveolar bone (tooth socket)
Calcified tissue covering the tooth root, provides attachment for periodontal ligament fibers to the tooth
Cementum
Space created when the gingival margin is reflected away from the tooth surface
Gingival sulcus
Normal gingival sulcus for healthy dogs
1-3 mm
Normal gingival sulcus for healthy cats
0.5-1 mm
Meaning, in the direction of the tip of the root
Apical
Meaning in the direction of the tip of the crown
Coronal
Prominence on the occlusal surface of the tooth
Cusp
Surface tooth that faces opposite jaw
Occlusal
Facing toward the midline
Mesial
Inflammation of structures around teeth
Periodontitis/Periodontal disease
Initiating factor of Periodontal disease
Bacterial plaque
Caused by apical migration and destruction of the epithelial attachment
Periodontal pockets (Sulcus >4mm)
What are the signs of grade 1, or initial stage, of periodontal disease?
Reversible gingivitis
Gingiva inflamed or bleeds easily
Minimal plaque and calculus accumulation
Treatment for Grade 1 Periodontal disease?
Dental prophy
Home care
Excellent prognosis
What are the signs of early lesion, Grade 2 periodontal disease?
Moderate gingivitis
Increased gingival inflammation, causes rounded gingival margin
Greater amounts of plaque and calculus
Treatment for Grade 2 Periodontal disease?
Mechanical scaling
Polishing, irrigation, fluoride treatment
Home care/good prognosis
What are the signs of Grade 3, Established lesion?
Severe gingivitis with bleeding on probing
Acute inflammation
Red/purple rounded gingival margins
Early peridontal pocket formation
Moderate accumulation of plaque and calculus
Treatment for Grade 3 Periodontal Disease
Supra and Sub gingival scaling
Polishing, irrigation, fluoride treatment
Subgingival culturette
Extractions
Guarded prognosis
What are the signs of Grade IV, advanced periodontal disease
Severe inflammation
Bone loss evident on radiographs
Deep pocket formations
Receding gums
Treatment for Grade IV Periodontal disease?
Supra and subgingival scaling
Polishing, irrigation, fluoride treatment
Subgingival culturette
Extractions
Guarded-long term prognosis
What is the prognosis of gingivitis vs periodontal disease?
Gingivitis is reversible, periodontal disease can only be slowed down
How is tooth mobility rated?
Grade I - slight movement
Grade II - Moderate tooth movement of 1 mm
Grade III - Marked tooth movement more than 1 mm
What are three benefits of fluoride treatment?
Antibacterial agent
Desensitize
Strengthens tooth
A benign growth thought to arise from periodontal ligament, appears on gingiva
Epulis
Second most common tumor; red and irregular lesions
Squamous cell carcinoma
Purple or reddish teeth indicate what?
Pulpitis, active inflammation due to injury or trauma
Gray discoloration indicates what?
Advanced pulpal necrosis, evaluate for endodonic treatment
Bright yellow discoloration indicates what?
Tetracycline treatment
What breed is most effected by gingival hyperplasia?
Boxers
Nontumorous lesion of the soft tissue
Gingival hyperplasia
Inflammation of the soft tissue of the oral cavity
Stomatitis
Signs of gingival hyperplasia
Thickening and proliferation of the gingiva as a result of chronic inflammation
What are some causes of stomatitis?
Foreign bodies, chemical or electrical burns, immune-related causes
Chemical agents used for the prevention and removal of plaque
Dentrifices
Used for treatment of periodontal disease with pockets
Doxycycline/Doxirobe Gel
The study and treatment of inside the tooth
Endodontics
What does the pulp consist of?
Nerves, blood vessels, lymphatics, connective tissue
What is the most important part for the development of teeth in young animals?
Dental pulp
Treatment options for endodontic disease?
Age of animal
Duration of disease
Anatomy of tooth
Most common causes for endodontal disease?
Pulp exposures from fractured teeth, dental abrasions, attrition
Calibrated in mm to measure defects below gum line (gingival sulcus depth)
Probe
Has a curved end and is used to detect defects above or below the gum line
Explorer
Used supragingivally to remove calculus, thin and triangular with 2 cutting edges
Scaler
Short blade used supra and subgingivally to remove tartar
“Hoe/Tartar scraper”
Thin spoon shaped instrument used for deep scraping, supra and subgingivally to remove calculus
Curette
Loosens teeth by rupturing the periodontal ligament
Dental elevator
Used for the elevation of the gingiva and mucosa for access to the alveolar bone during tooth extraction, periodontal therapy and oral surgery
Periosteal elevator
Fine grade stone to maintain smoother cutting edges, removes less metal
Arkansas stone