Dental Block 1 Flashcards
What is the health care worker risk when dealing with recurrent herpes
it is possible to develop lesions on the fingers
(Herpangina or Herpetic Whitlow)
if the health care provider isn’t careful with gloving and hand washing
Why would you refer someone for restoration
Caries on bitewing x-rays?
Any clinically visible decay?
Any old or fractured restorations that need to be replaced
What is a lefort I fx
Transverse maxillary fx
What do the minerals contained in the pellicle do
buffer the pH and provide components for
remineralization of enamel
What are the components of the oral cavity proper
hard and soft palates, teeth, cheeks, anterior 2/3 of the tongue, and floor of the mouth.
When adding fluoride, what becomes the critical pH in Stephan curve
4.5
What are the S/s of condyloma acuminatum
Painless; multiple, slightly papillary nodules attached with a broad
base; often in clusters
• occurs most often on lips, tongue, and soft palate; anogenital lesions
may also be present
• Etiology: an STI caused by infection with human papillomavirus
(HPV-6, HPV-11, HPV-16, and HPV-18)
What causes inflammation of the PDL
• Includes: excessive wear; mobility; widened PDL
• Etiology:
Non-bacterial: poor restoration; ill-fitting appliance, occlusal trauma
Bacterial: near apex of root due to inflammation in pulp tissue
• Reversible
Describe lining mucosa
60% of total mucosa.
Covers the floor of the mouth, ventral (underside) tongue, alveolar mucosa, cheeks, lips and tissues covering soft palate.
Does not function in mastication and therefore has minimal attrition.
Non-keratinized; soft and pliable.
What are appropriate storage methods for teeth
- Saliva (vestibule; under the tongue) • Lowfat milk
- Coconut water
- Pedialyte
- NO to water or Gatorade
- NEVER wrap in tissue
- NEVER leave in open air
What is the Tx for primary herpetic gingivostomatitis
- Supportive care
- Soft diet & adequate liquids
- Resolves in 5-7 days; acute cases 2 weeks
- Acetaminophen for discomfort, for severe orofacial infections
Acyclovir may be used
What is a class 3 dental status
The treatment needs indicate that a dental emergency will likely occur within 12 months
What is the sensory supply to the base of the tongue
CNX
General and taste
(Internal laryngeal nerve
What are the S/s of periodontal disease
- Mobile teeth
- Mouth sores & purulence
- Radiographic evidence of bone loss
- Halitosis
- Blunted interproximal papillae
- Destruction of attachment apparatus
Low ph in the mouth leads to
Demineralization
What is the dosing for augmentin
RX: Clavulanic Acid, 125mg, by mouth, every 8 hours for 5-7 days
Plus
RX: Amoxicillin, Loading dose: 1000mg
Maintenance dose: 500mg, by mouth, every 8 hours for 7 days
Are there papillae on the posterior 1/3 of the tongue
no papillae but shows nodular surface because of underlying lymphatic nodules (lingual tonsils)
What is candidiasis
curdy, whitish layer that leaves a red inflamed base when wiped off
• Etiology: Candida albicans; opportunistic fungal infection
• Symptoms: burning, dysgeusia, sensitivity, generalized discomfort;
co-infection with staph may be present
Can be acute or chronic (denture/appliance)
How long can intermediate restorative material remain in place
For up to one year
What is the ratio of powder to liquid for Intermediate restorative material
1:1
Correct mix can be rolled in your gloved fingers without leaving a
residue
Is the damage in Periodontal disease permanent
Can be managed – but damage is permanent
What is post extraction inflammation of an exposed, sensitive alveolar process
Alveolar osteitis
Dry socket
What three bacteria make up the red bacterial complex for periodontal disease
- Tannerella forsythia
- Treponema denticola
- Porphyromonas gingivalis
What is the critical pH in the mouth for tooth decay
Stephan curve
Below 5.5
What is the purpose of I&D
- Removes pus, necrotic debris, and bacteria
- Useful for abscess or cellulitis
- Reduces tissue tension
- Improves local blood supply
- Improves delivery of host defenses and antibiotics
- Decreases pain
- Changes oxygen tension and microenvironment
What is the tx for candidiasis
Nystatin suspension; ointment or Clotrimazole troches. Also Ketoconazole or Fluconazole tablets
What are the three major salivary glands in the mouth
Parotid
Submandibular
Sublingual
What are the 4 types of teeth
Incisor
Canine
Premolar
Molar
What are maxiallary vestibular and palatal abcesses primarily the result of
potential result of any infected maxillary tooth
Periodontal disease is always preceded by
Gingivitis
What are the features of masticatory mucosa
Keratinized and Parakeratinized Stratified Squamous Epithelium (KSS/PKSS)
Variable Lamina Propria
Reteridges(pegs)
Located on the gums
What is the undesurface of the hard palate covered in
Mucoperiosteum
What is the keystone pathogen in periodontal disease
Porphyromonas gingivalis:
• Non-motile, gram-negative, anaerobic rod
• Releases enzymes, collagenases and other substances which initiate the
inflammatory process
• Subverts host immune system
Chiefly responsible for bone loss
What is a class 1 dental classification
No dental needs
What is the oral vestibule
The vestibule is the space between the teeth and the inner mucosal lining of the lips and cheeks.
What is Fordyce granules
benign developmental variation of ectopic sebaceous glands found in normal buccal mucosa or commissures of lip
painless; rice-like, white or yellow-white, asymptomatic papules of 1-2 m
What is the most common type of gingivitis
Plaque associated gingivitis
What is the first layer that forms on the tooth
Dentin
How does a sinus tract present
- Typically non-painful
- Pimple-like bump on the oral mucosa
- Sinus tract may have drainage associated with it
• Tooth has no response to cold tests
Where do most various lesions occur
On the Inter proximal surface of primary teeth
What are the 4 tooth surfaces
Facial
Buccal
Lingual
Palatal
What is the lymph drainage for the anterior 2/3 of the tongue
Submandibular unilaterally & then deep cervical nodes
When does the AAPD (American Academy of Pediatric Dentistry) recommend establishing a dental home routine
Within 6 months of eruption of the first tooth and nlt 12 months of age
Why would you refer someone to a periodontist
Pocket depths 1-3mm? Knife-edged papillae? Scalloped, uniform color? Stippled? Firmly attached to bone? Healthy bone around all teeth on x-rays?
What are the 3 requirements for the formation of dental caries
- Cariogenic bacteria
(Streptococci mutans and Lactobacillus) - Sugar
- Available tooth surfaces
What is the RX for clindamycin
- Loading dose: 600mg
* Maintenance dose: 300mg, by mouth, every 6 hours for 7 days
What is benign migratory glossitis
Geographic tongue
Diffuse multifocal red lesions with white rims or edges that migrate
- Eroded areas due to loss of filiform papillae
- Typically asymptomatic; sometimes mild burning sensation
- Dorsal or lateral surfaces of tongue
What nerve supplies the intrinsic muscles of the tongue
Hypoglossal nerve,
The tongue is attached near CN 9
What is the only non shedding surface in the human body
Enamel
What is pericoronitis
– acute inflammation in the tissues surrounding the crown of a partially erupted tooth
• •
Etiology – trapped food/bacteria beneath gingival flap
What is clindamycin
• Use when patient is allergic to Penicillin • Bacteriostatic (suppresses protein synthesis) • Anaerobic bacteria • Penetrates bone
• Side effect: must instruct patient to stop use with first sign of diarrhea
(eight-fold increased risk of developing Clostridium difficile infection, compared to Penicillin, that can evolve into pseudomembranous colitis)
What is black hairy tongue
Diffuse white, yellow, brown or black pigmentation of tongue
• Elongation of filiform papillae; retention of papillae which grown longer
and don’t shed like normal
• Asymptomatic
Where does recurrent herpes manifest
attached gingiva and hard palate (keritinized tissue); external portions of the lip
What cranial nerve innervates the parotid gland
CN 9
Glossopharyngeal
What does saliva buffer the pH in the mouth to
PH 6-8
What are the three basic food processing functions of the teeth
Cutting
Holding/ Grasping
Grinding
What extrinsic muslce of the tongue does tongue elevation
Styloglossus and Palatoglossus
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Dentin has odontoblasitc processes that do what
responsible for growth and repair of dentin.
What is the last tissue of the tooth to form
Cementum
What does the term occlusion mean
is the relationship of the mandibular and maxillary teeth when closed or during excursive movements of the mandible; when the teeth of the mandibular arch come into contact with the teeth of the maxillary arch in any functional relationship
Where does the cementum receive nutrients from
The periodontal ligament (PDL)
What extrinsic tongue muscle does tongue depression
Hyolgossus and genioglossus
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What are the two prominent structures of the external mouth
Vermillion border (Edge of lip) And Commissures (Corners)
What are the 4 phases of plaque formation
- Pellicle formation
- Bacterial Attachment
- Young supragingival plaque forms
(Mainly gram positive cocci and rods) - Aged supragingivial plaque develops
(increase in the percentage of gram-negative anaerobic bacteria.)
What are the S/s of mucosal allergy
localized discomfort; circumscribed erythematous patches at the site of contact with the allergen
What is leukoplakia
white patch or plaque that cannot be characterized clinically or pathologically as any other disease
- The white patch does not rub off
- It is due to a thickened surface keratin layer
Is considered a precancerous sign
What are the S/s of a traumatic ulcer
rolled white border of hyperkeratosis at area of trauma
What are the S/s of gingivitis
- Edema
- Erythema
- Heat
- Pain
- Bleeding on probing
- Purulence
- Receding gingival margin
- Loss of stippling appearance
- Shiny
What are the three parts of the tongue
Oral (anterior 2/3)
Pharyngeal (posterior 1/3)
Base (throat and epiglottis)
What is support care for infection management
- Monitor/manage airway
- Analgesics
- Hydration
- Nutrition
- Rest
Describe the submandibular salivary glands
- Two lobes: superficial and deep
- Mixed secretions: 10% mucous and 90% serous through the Submandibular duct
- 60% of saliva produced
- Salivary amylase
- Gland that gleeks
What is pathological about subgingival plaque
- Tissue inflammatory factors
* Highly pathogenic factors
What is a Class II malocclusion
Mesiobuccal cusp of Maxillary 1st Molar is anterior to the buccal groove of the Mandibular 1st Molar
Over bite
Retrognathic
What are the Principles of severe infection management
removing the cause,
establishing drainage, and aggressive antibiotic therapy
What is intermediate restorative material made of..
- Zinc oxide (powder) and eugenol (liquid)
- Base or temporary cement
- Mechanical retention is needed to keep temporary restoration in place
What is the progression of Cavernous sinus thrombosis
Canine space infection- infra orbital space- to angular vein- CAVERNOUS SINUS THROMBOSIS
Why would you refer someone to a endodontist
Any sensitive or throbbing teeth? Any irreversible caries?
Any non-vital teeth with sinus tract present?
Any teeth need root canals
All 4 muscles of mastication are innervated by which CN
CN V3
Mandibular branch of CNV
IN the mouth what does the term distal refer to
Away from the midline of the dental arch
What do the sublingual glands produce
- Mostly mucous
- 8-20 ducts of Rivinus
• 5% of saliva produced
What does dental public health encompass/ do
preventing and controlling dental diseases and promoting dental health through organized community efforts.
What is the plaque development timeline
• Few minutes: acquired pellicle formation and bacterial adhesion
• 2 hours: initial plaque formation takes place with irreversible colonization of
aerobic gram positive bacteria
- 6 hours: supragingival plaque is well established
- 2 days: plaque doubles in mass
• 5-7 days: plaque maturation is dominated by and gram negative and
filamentous bacteria
• 21 days: bacterial re plication slows so that plaque accumulation becomes
relatively stable
What is the most common mid facial fx
Zygomatic complex fx
Depressed cheek bone (dimple)
- Bleeding into cornea of fractured side eye – eye will be bright red
- Restricted movement
What is augmentin
•Amoxicillin and Clavulanic Acid combination (Augmentin)
• Use when symptoms don’t improve with Amoxicillin alone
• This combo increases spectrum of amoxicillin in persistent infections
• Expensive
• Cautions: Potential for GI and hepatic toxicity due to severe anaphylactic
allergic reactions
What are the s/s of a periapical abscess
• Intense pain to palpation (as pus accumulates within the alveolus) • Extreme sensitivity to percussion • Localized edema • Tooth has no response to cold tests • Fever & chills (if systemic infection present
Name that disease
Inflamed soft and hard tissues
- Etiology: anaerobic bacteria
- Includes: alveolar bone, gingiva, and periodontal ligament (PDL)
Periodontitis
What are the S/s of alveolar osteitis
3-4 days post-extraction • Exposed, unprotected bone • Usually a mandibular third molar • Severe pain • Foul odor • Swelling & lymphadenopathy
What is a Periapical abscess
acute inflammation at the apex of a non-vital tooth
Etiology – bacteria (due to gross decay, dental trauma, large filling)
How can you reduce your risk of caries
• Teeth are brushed after eating to remove plaque and sticky foods
• Fresh fruit, vegetables, and whole grain snacks are chosen instead of
candy or juice
- Flossing is part of the daily oral hygiene regiment
- Parents maintain good personal oral health
What are the phases of tooth eruption
Pre-eruptive Eruptive -root formation -penetration -movement -occlusal contact
Post- eruptive
What are the characteristics of the intrinsic tongue muscles
Confined to tongue
No bony attachment
Consists of:
• Longitudinal fibers
• Transverse fibers
• Vertical fibers
Which teeth have a facial surface
Incisors and Canines
What is oral and Mario facial pathology
management of diseases affecting the oral and maxillofacial regions
oral pathology includes research and diagnosis of diseases using clinical, radiographic, microscopic, biochemical, or other examinations.
What is the difference between petechiae
Purpura
Eccymosis
- Petechiae: 1-2 mm
- Purpura: 2 mm -2 cm
- Ecchymosis: > 2 cm
What are the early warning signs of gingivitis
- Clinical signs of gingivitis
- Probing apical to the CEJ
- Radiographic evidence of bone loss
- Tooth mobility
- Pathologic migration of teeth
What is the artery that supplies blood to the tongue
dorsal lingual artery
When does the enamel being to form
6-8 weeks in utero
What is the treatment for a periapical abscess
I&d
Refer to dentist for possible root canal
What is a sinus tract
a pathway from an enclosed area of infection to an epithelial surface
What dental appliance increases the risk of gingivitis
Braces
Describe a orbital rim fx
significant force required due to thickness of bone;
palpable step defect along inferior orbital rim;
potential damage to Optic Nerve
Describe the pulp of the tooth
Pulp: composed of fibroblasts, odontoblasts; vascular, nervous, lymphatic components.
Contains Type I and II collagen
- Unmineralized
- Exits at the apex, but may have accessory canal
What are the S/s of primary hermetic gingivostomatitis
Usually seen in younger children
- Vesicles initially and progresses to ulcers with red halos
- Spreads during asymptomatic viral shedding in the saliva
- May have fever, malaise, and lymphadeopathy
What are the top three medication that cause Medication induced gingivitis
- Cyclosporine: immunosuppressant • Phenytoin: anticonvulsant
- Nifedipine: calcium-channel blocker
The parotid gland sits “on top” of what muscle
The Masseter
What is amoxicillin
- Antibiotic of choice for odontogenic infection
- Broad spectrum
- Bactericidal against gram-positive and gram-negative bacteria
- More readily absorbed from gastrointestinal tract than Pen VK
• Only 20% of absorbed amoxicillin is protein-bound in plasma, making it
more readily available
Why would you refer someone to oral surgery
Any extractions indicated? Impacted teeth present?
Bone fractures?
What is the largest muscle of mastication
The Temporalis
What does the parotid gland produce
- Serous saliva
- Produces ptyalin through the Parotid duct
• 30% of saliva production
What does supragingival plaque metabolize
Sacchorolytic: metabolize carbohydrates
What are the 4 muscles of mastication
Masseter
Temporalis
Medial pterygoid
Lateral pterygoid
When suturing facial lacerations that involve the mouth, where should you begin your suture
Begin closure at the mucocutaneous junction (vermillion border)
How many teeth are in primary dentition
20
Called baby teeth, or milk teeth
Sometimes deciduous teeth
Why would you refer someone to a prosthodontist
Need teeth replaced?
Crowns, veneers, bridges, dentures, implants?
What causes NUG (Necrotizing Ulcerative Gingivitis)
Physiologic stress & smoking
(WWI battlefield trenches)
After the initial infection, where does primary herpetic gingiviostomatisis reside
dormant in the CN5 sensory nerve ganglia of the oral and perioral regions
What is supragingival plaque made up of
- Mostly facultative anaerobes, gram-positive bacteria
* Streptococci and Actinomyces
Why would you refer someon to oral pathology
Any pigmented soft tissue lesions? Lips? Buccal mucosa or palate? Boney defects on x-ray? Salivary glands blocked? Changing moles?
What are the S/s of primary syphillis
- Painless
- Lesion with central depression (chancre) at site of inoculation
• Typically located on the face, tongue, lip, scalp, genitalia and rectal areas
Describe masciatory mucosa
25% of total mucosa.
Gingiva (free, attached and interdental) and tissues covering hard palate.
This is the primary mucosa to be in contact with food during mastication.
Masticatory mucosa is usually keratinized.
What causes glossitis
congenital malformations, vascular abnormalities, muscular
hypertrophy
What is a class 4 dental status
Dental status unknown (examination required annually)
Describe the pellicle
the acellular layer of salivary proteins, mucins and other macromolecules on oral surfaces;
-approximately 10 micrometers thick
What bacteria causes syphillis
Treponema pallidum
What is the most common place for the mandible to be fx
The condyles
What is gingivitis
Inflammation limited to the soft tissues which surround the teeth
- Also called “early gum disease”
- A precursor of advanced gum disease (periodontal disease)
- Inflammation extended into the alveolar process, PDL, and/or cementum
Name that disease:
Inflamed soft tissues in the mouth
- Etiology: bacteria; poor oral hygiene; injury; immunocompromised
- Reversible
Gingivitis
Who would you refer a pt with periodontal disease to
Periodontist
Registered dental hygienist
What is the function of the lateral pterygoid muscle
Protrusion, retrustion, depression, of the mandible
The caries process is reversible all the way up until…
Dentin becomes involved
What does the term eruption refer to
is the movement of the tooth from its developmental position to the occlusal plane
When should a oral health evaluation for an infant occur
Before the 1st bday