introduction to salivary glands - university of...
TRANSCRIPT
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Introduction to theIntroduction to theSalivary GlandsSalivary Glands
Dennis E. Lopatin, Dennis E. Lopatin, PhPh.D.D
Dept. of Biologic &Dept. of Biologic &Materials SciencesMaterials Sciences
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Even ScienceEven ScienceFiction HasFiction Has
Discovered theDiscovered theImportance ofImportance of
Saliva!Saliva!
Saliva is important, even in science fiction.
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Role of Saliva in Oral HealthRole of Saliva in Oral Health
nn LubricationLubrication
nn Maintenance of mucous membrane integrityMaintenance of mucous membrane integrity
nn Soft tissue repairSoft tissue repair
nn Maintenance of ecological balanceMaintenance of ecological balance
nn Debredement/lavageDebredement/lavage
nn AggregationAggregation
nn Antibacterial, antifungal, antiviralAntibacterial, antifungal, antiviral
nn Maintenance of pHMaintenance of pH
nn Maintenance of tooth integrityMaintenance of tooth integrity
Numerous functions, critical to health, that involve saliva. These functionswill be addressed during the course.
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Salivary Gland AnatomySalivary Gland Anatomy
nn Parotid GlandParotid Gland
nn Submandibular GlandSubmandibular Gland
nn Sublingual GlandSublingual Gland
nn Minor GlandsMinor Glands
It is not our intent to cover anatomy during this course. However, you shouldknow the locations and characteristics of the salivary glands. The fineanatomical and histological details will be covered in other courses.
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Major SalivaryMajor SalivaryGlandsGlands
ParotidParotidGlandsGlands
SubmandibulSubmandibular Glandsar Glands
You should know these names and locations.
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StructureStructureof theof theDuctsDucts
Detail of the salivary glands.
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Salivary ConstituentsSalivary Constituents
nn Water & electrolytesWater & electrolytes
nn ProteinsProteins
nn Non-electrolytesNon-electrolytes
nn Non-glandularNon-glandularproteinsproteins
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Factors Contributing to Saliva ContentFactors Contributing to Saliva Content
nn Normal Human VariabilityNormal Human Variability
nn Unstimulated vs. stimulated salivaUnstimulated vs. stimulated saliva
nn AgingAging
nn MedicationsMedications
nn DiseaseDisease
nn Circadian rhythmsCircadian rhythms
nn ObjectiveObjective vs vs. subjective. subjectivedeterminationsdeterminations
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Human VariationsHuman Variations
nn Large range definesLarge range defines“normality”“normality”
nn A little goes a long wayA little goes a long way
nn Changes over timeChanges over time
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Normal Variations in Saliva OutputNormal Variations in Saliva Output
Normal defines a wide range of salivary flow rates.
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Unstimulated vs. Stimulated SalivaUnstimulated vs. Stimulated Saliva
nn UnstimulatedUnstimulated•• Basal productionBasal production
•• Confers most protectionConfers most protection
•• Importance of minor andImportance of minor and submandibular submandibularoutputoutput
•• Low output during sleeping hoursLow output during sleeping hours
nn StimulatedStimulated•• Protection during masticationProtection during mastication
•• Assists in deglutitionAssists in deglutition
•• Importance of parotid outputImportance of parotid output
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Circadian RhythmCircadian Rhythm
What is the significance of the salivary flow dropping at night? When wouldthe teeth be most susceptible to demineralization?
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Effects of Aging on SalivaEffects of Aging on Saliva
nn QuantityQuantity
•• No significant changes in majorNo significant changes in majorsecretionssecretions
•• No significant changes in minorNo significant changes in minorsecretionssecretions
nn QualityQuality
•• No general changesNo general changes
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Stimulated Parotid Flow Over TimeStimulated Parotid Flow Over Time
In a study of 27 males and 23 females, tested over a period of 10 years, therewere no significant changes in stimulated parotid saliva flow.
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Assessment of Salivary FlowAssessment of Salivary Flow
nn Objective measures (Clinical tests)Objective measures (Clinical tests)
•• Major gland secretionsMajor gland secretions
•• Minor gland secretionsMinor gland secretions
•• Whole salivaWhole saliva
nn Subjective measures (PatientSubjective measures (Patientperceptions)perceptions)
•• Xerostomia Xerostomia (Do you have a dry mouth?)(Do you have a dry mouth?)
•• Questionnaires Questionnaires (Dry mouth, trouble(Dry mouth, trouble
swallowing?)swallowing?)
•• Thirst Thirst (Are you often thirsty?)(Are you often thirsty?)
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Factors Affecting Salivary ProductionFactors Affecting Salivary Production
nn Local diseasesLocal diseases
nn Systemic diseasesSystemic diseases
nn MedicationsMedications
nn Head and neckHead and neckradiationradiation
nn ChemotherapyChemotherapy
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Local Factors Affecting SalivaLocal Factors Affecting Saliva
nn Obstructive DiseasesObstructive Diseases•• Neoplasms, mucous plugs, calculiNeoplasms, mucous plugs, calculi
nn Inflammatory DiseasesInflammatory Diseases•• Acute viral sialadenitis (myxovirus ofAcute viral sialadenitis (myxovirus of
mumps)mumps)
•• Acute suppurative bacterial sialadenitisAcute suppurative bacterial sialadenitis
•• Chronic recurrent sialadenitisChronic recurrent sialadenitis
•• Allergic parotiditisAllergic parotiditis
nn Head and Neck IrradiationHead and Neck Irradiation
nn DietDiet
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Sialadenitis: Inflammation of the Salivary GlandSialadenitis: Inflammation of the Salivary Gland
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Bacterial Parotiditis: Inflammation of the Parotid GlandBacterial Parotiditis: Inflammation of the Parotid Gland
Note exudate from gland upon manual expression.
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Medications Influence SalivaMedications Influence Saliva
nn Anti-cholinergicsAnti-cholinergics
nn Anti-histaminesAnti-histamines
nn Anti-depressants,Anti-depressants,antipsychoticsantipsychotics
nn Sedative and hypnoticSedative and hypnoticagentsagents
nn Anti-hypertensivesAnti-hypertensives
nn Anti-Parkinson drugsAnti-Parkinson drugs
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Oral Side Effects Prescribed DrugsOral Side Effects Prescribed Drugs
RG Smith & AP Burtner, 1994RG Smith & AP Burtner, 1994
Xerostomia - Dry mouthXerostomia - Dry mouth
Dysgeusia - Impairment of tasteDysgeusia - Impairment of taste
Stomatitis - Inflammation of oral mucousStomatitis - Inflammation of oral mucousmembranesmembranes
Glossitis - Inflammation of tongueGlossitis - Inflammation of tongue
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Systemic Diseases That Influence SalivaSystemic Diseases That Influence Saliva
nn Sjögren’s syndromeSjögren’s syndrome
nn Sarcoidosis Sarcoidosis (a systemic granulomatous disease,(a systemic granulomatous disease,
especially of lungs, but affecting many other organs,especially of lungs, but affecting many other organs,including parotid glands)including parotid glands)
nn Cystic fibrosisCystic fibrosis
nn DiabetesDiabetes
nn Alzheimer’s diseaseAlzheimer’s disease
nn AIDSAIDS
nn DehydrationDehydration
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Submandibular Duct Obstruction 2° to InfectionSubmandibular Duct Obstruction 2° to Infection
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Head and Neck RadiationHead and Neck Radiation
nn ParotidParotid vs vs.. submandibular submandibular
nn Dysfunction is dose- and field-dependentDysfunction is dose- and field-dependent
nn Threshold of permanent destruction: 2100-Threshold of permanent destruction: 2100-40004000 cGy cGy
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Salivary Flow Following RadiationSalivary Flow Following RadiationTherapyTherapy
Modified Carlson-Crittenden collectors have been placed over parotid glandsto collect saliva. Note lack of saliva flow from the right gland. Markings onpatient’s neck indicate field of irradiation. The apparent “sunburn” is due toirradiation burn.
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ChemotherapyChemotherapy
nn Alters salivary constituentsAlters salivary constituents
nn Normal function returnsNormal function returns
nn Bone marrow transplantation:Bone marrow transplantation:graft vs. host diseasegraft vs. host disease
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Salivary Dysfunction and Oral SequelaeSalivary Dysfunction and Oral Sequelae
nn CariesCaries
nn MucositisMucositis
nn Oral ulcerationOral ulceration
nn TasteTaste
nn SwallowingSwallowing
nn DenturesDentures
nn InfectionsInfections
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Salivary Dysfunction and Oral Sequelae:Salivary Dysfunction and Oral Sequelae:CariesCaries
nn Incipient decayIncipient decay
nn Recurrent decayRecurrent decay
nn Root vs. coronalRoot vs. coronaldecaydecay
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Extensive Caries in a post-radiation patientExtensive Caries in a post-radiation patient
Note the cervical decay (at the gumline) due to lack of saliva. This is ahallmark of radiation therapy.
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Caries in a xerostomic individualCaries in a xerostomic individual
GlossitisGlossitis
MucositisMucositis
CariesCaries
Note incisal decay and erosion resulting from lack of lubrication andremineralization.
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Salivary Dysfunction and Oral Sequelae:Salivary Dysfunction and Oral Sequelae:MucositisMucositis
nn PainPain
nn InfectionsInfections
nn DysphagiaDysphagia
nn ImpairedImpairednutritionnutrition
nn DehydrationDehydration
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MucositisMucositis
Note the inflamed lips and gingival tissue due to the lack of the protectiveeffects of saliva.
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Salivary Dysfunction and Oral Sequelae:Salivary Dysfunction and Oral Sequelae:Oral UlcerationOral Ulceration
nn Wound healingWound healing
nn Lichen planusLichen planus
nn Recurrent aphthous ulcersRecurrent aphthous ulcers
nn PainPain
nn Secondary infectionSecondary infection(Candidiasis)(Candidiasis)
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Xerostomia: Dry Fissured TongueXerostomia: Dry Fissured Tongue
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Salivary Dysfunction and Oral Sequelae:Salivary Dysfunction and Oral Sequelae:TasteTaste
nn Reduced enjoyment of eatingReduced enjoyment of eating
nn Altered supra-threshold and thresholdAltered supra-threshold and thresholdperformanceperformance
•• Sucrose, sodium chlorideSucrose, sodium chloride
•• Citric acid, quinine sulfateCitric acid, quinine sulfate
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Salivary Dysfunction and Oral Sequelae:Salivary Dysfunction and Oral Sequelae:SwallowingSwallowing
nn Subjective complaints of dysphagiaSubjective complaints of dysphagia
nn Increased duration in oral swallowIncreased duration in oral swallowtimestimes
•• Dry swallowsDry swallows
•• Wet swallowsWet swallows
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Salivary Dysfunction and Oral Sequelae:Salivary Dysfunction and Oral Sequelae:DenturesDentures
nn Decreased retention and stabilityDecreased retention and stability
nn Increased complaintsIncreased complaints
nn Greater likelihood for Greater likelihood for CandidaCandidainfectionsinfections
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Salivary Dysfunction and OralSalivary Dysfunction and OralSequelae: InfectionsSequelae: Infections
nn CandidiasisCandidiasis
nn CariesCaries
nn GingivitisGingivitis
nn Viral infectionsViral infections
nn BacteremiasBacteremias
nn AspirationAspirationpneumoniapneumonia
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Candida 7th Week Following TonsilCandida 7th Week Following TonsilRadiation TreatmentRadiation Treatment
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Candida/Denture StomatitisCandida/Denture Stomatitis
Note inflamed outline of prosthesis.
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Saliva and Oral health: ConclusionsSaliva and Oral health: Conclusions
nn Saliva in healthSaliva in health
nn Saliva in diseaseSaliva in disease
nn Prevention ofPrevention ofdiseasedisease
nn Treatment ofTreatment ofdiseasedisease
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Saliva deficientSaliva deficient