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Medical History&
Periodontal MedicineDr Melinda NewnhamDr Melinda NewnhamDr Melinda NewnhamDr Melinda Newnham
BDSc(WA) FRACDS DCD (Perio) FRACDS (Perio)BDSc(WA) FRACDS DCD (Perio) FRACDS (Perio)BDSc(WA) FRACDS DCD (Perio) FRACDS (Perio)BDSc(WA) FRACDS DCD (Perio) FRACDS (Perio)
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Medical Conditions&
The Periodontium
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Systems Check
1. CNS & special senses
2. CVS
3. Respiratory
4. Endocrine5. Haematological
6. Dermatological
7. Musculoskeletal
8. GIT
9. Genitourinary
10. Immune system
11. Past hospitalisations and cancer history
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Special Precautions for SystemicConditions
1. Cardiovascular Diseases & Infective Endocarditis
watch BP/ adrenaline, may need antibiotic (AB) cover
2. Coagulation Disorders: managing bleeding
3. Renal Diseases
usually on immunosuppressants and may also need AB cover
4. Blood Dyscrasias: infection, ulceration & bleeding
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Transmissible Diseases
Hepatitis A,B,C,D
HIV Infection
Tuberculosis
CJD
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Systemic Factors which can influencePeriodontium
1. Hormonal
2. Haematological
3. Genetic
4. Smoking
5. Stress
6. Nutritional Deficiency
7. Drug-induced Gingival Overgrowth
8. Psychosomatic
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Hormonal/ Endocrine
Diabetes Mellitus
Pregnancy
Puberty
Contraceptive Pill
Thyroid/ Pituitary/ Parathyroid Glands
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Diabetes Mellitus
Metabolic disorder of glucose intolerance,
causing prolonged hyperglycaemia
Type 1 - decreased circulating insulin, suddenonset, young patients (
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Diabetes Mellitus - Major Symptoms
1.1.1.1. PolydipsiaPolydipsiaPolydipsiaPolydipsia
2.2.2.2. PolyuriaPolyuriaPolyuriaPolyuria
3.3.3.3. PolyphagiaPolyphagiaPolyphagiaPolyphagia
4.4.4.4. Fatigue/ weaknessFatigue/ weaknessFatigue/ weaknessFatigue/ weakness
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Diabetes - Systemic complications
Affects small vesselssmall vesselssmall vesselssmall vessels (vascular disease).
Increased susceptibility to infection.susceptibility to infection.susceptibility to infection.susceptibility to infection.
Causes poor wound healing.poor wound healing.poor wound healing.poor wound healing.
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Common Complications ofChronic Hyperglycaemia
Retinopathy
Renal disease/ failure
Neuropathy
Cardiovascular disease
Diabetic gangrene Increased risk & severity of
periodontal disease
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Assessing Diabetic Control
Blood glucose: fasting or casual tests.
Glucose tolerance test, HbA1c.
< 6 Normal
6-8 good
8-10 mod
> 10 poor
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Poorly Controlled Diabetes & Perio
1. Expect more periodontal abscesses and a poorresponse to periodontal treatment.
2. Prone to infection & poor wound healing (>frequentpost-operative infection).
3. Antibiotic cover for extractionsand surgery.
4. Encourage patient to monitor/ controltheir blood sugar levels.
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Pregnancy, Puberty &Contraception
Induces an exaggerated response to
plaque/ calculus.
Gingiva becomes irritated and inflamed,
often with overgrowth.
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Periodontal Effects of Pregnancy
Pregnancy gingivitis:
plaque-induced gingivitis exacerbated by hormonal fluctuations in the2nd & 3rd trimesters
Prevalence 35%-100%
Progesterone increases gingival capillary permeability & dilation Oestrogen + progesterone change CT ground substance and
reduce keratinisation of oral epithelium
Reduces effectiveness of barrier to bacterial attack
Increased permeability of blood vessels increases exposure to andresponse to plaque bacteria
Oestrogen & progesterone are used as a nutrient source forPrevotella intermedia (Bacteroides) (Kornman & Loesche 1979)
Some subgingival plaque bacteria can use these sex steroid
hormones as growth factors
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HIV
Associated with increased risk of certain periodontal
conditions such as Linear gingival erythema, NUG, NUP,
NUS.
There appears to be an increased incidence with
diminishing immune competence .
Linear gingival erythema Necrotizing ulcerative periodontitis
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HIV & Chronic Periodontitis
Periodontitis:
Gingival recession and loss of clinical attachment appearsto occur more frequently in adult HIV patients.
But most patients with HIV can maintain periodontal health.
Highly active antiretroviral therapy (HAART):
Reduces viral loads & increases CD4+ counts (T cells). Oral manifestations of HIV infection appear to diminish
when HAART is successful.
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LGE & HIV
Prevalence 5- 49%.
2-3mm band of erythema and
oedema at gingival margin.
Gingiva bleed easily but rarelypainful.
Not associated with white cell count
(CD4+ cells).
Increased tendency to progress to
NUP.
Bacteria similar to periodontitis
but Candida albicansin 50% of cases
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NUP & HIV
Prevalence 17-50%.
Rapid onset with severe pain.
Soft tissue necrosis, gingival ulceration &cratering with bone exposure.
Gingiva bleed easily and spontaneously.
More often incisors and molars.
Hypothesised that change from LGE to NUPassociated with rapid decrease in CD4+ cellnumbers.
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Haematological - Neutropenia
Varied disease group with decrease/absence
of circulating neutrophils.
Causes: Idiopathic
Familial
Following viral, bacterial, protozoal infection andsystemic disease
Drug-induced
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Periodontal manifestations ofNeutropenia:
1. Oral ulceration.
2. Gingival inflammation.
3. Rapid periodontal breakdown.
4. Alveolar bone loss.
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Haematological - Leukaemia
Malignant disease involving proliferation of
leukocyte-forming tissues (especially bone marrow).
Infiltrates tissues.
May be acute or chronic.
Involves granulocytes, lymphocytes or monocytes.
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Periodontal manifestations ofLeukaemia:
1. Gingival enlargement.
2. Gingival bleeding.
3. Infection.
4. Oral mucosal erosions and ulcers.
5. Bone pain.
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Genetic - Downs Syndrome
Chromosomal disorder (Trisomy 21).
Incidence 1:700 (1:100 in mothers >45 years of age).
Periodontally - high incidence of disease, small conicalroots, increased in rate of destruction with age.
Aetiology - local factors:
Plaque.
Occlusal problems, habits.
Saliva and systemic factors: immune system, vascular
and nutritional factors.
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Genetic - Other
Hypophosphatasia
Chediak-Higashi Syndrome
Leukocyte Adhesion Deficiency
Ehlers-Danlos Syndrome
Papillon-Lefvre Syndrome
Hereditary Gingival Fibromatosis
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SMOKING
Increased bone loss, tooth loss, furcation
exposures and prevalence of periodontitis.
Severity of periodontal disease is related to
number of cigarettes smoked per day and for how
long - DOSE RESPONSE RELATIONSHIP.
Strong associations between smoking and both
aggressive and refractory periodontitis.
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Smoking Clinical
1. Fibrotic gingiva with thickened, rolled margins
2. Minimal gingival redness or swelling given the disease severity
3. Relatively severe and widespread disease compared to same-
age never smokers
4. Rapid disease progression with an early onset (@ 20-30 yrs).
5. Greater pocket depths + recession in anterior and palatal sites
local effects of nicotine.
6. More bone loss especially interproximally.
7. No association between periodontal status and plaque/calculus
scores.
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Smoking Mechanisms
Early studies say: no difference between smokers &non-smokers.
Recent studies say: more pathogens in shallower sites ->anaerobic conditions in pockets.
Microbial
Flora
Impaired neutrophil function.
Impaired fibroblast function.
Increased production & release of pro-inflammatory
cytokines.
Reduced antibody production.
Host
Response
Impairs revascularisation.
Vasoconstriction of blood vessels.Vascular
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Smoking - Outcomes
Smoking Causes Poorer Treatment Outcomes
1. Refractory Periodontitis: Up to 90% of non-
responding patients were smokers.2. Non-surgical treatment.
3. Surgical treatment.
4. Regenerative and grafting procedures.
5. In furcations during maintenance.
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Smoking Cessation
Cessation does not reverse the damage of past smoking.
However:
The rate of bone and attachment loss slows afterpatients quit smoking (Bergstrom et al 2000).
Former smokers respond to non-surgical andsurgical therapy in a manner similar to non-smokers (Kaldahl et al 1996, Grossi et al 1997).
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Stress & Periodontitis
Mechanism not understood.
There is a relationship between:
Acute stress and ANUG. Accumulation of stress events and past
periodontal breakdown.
Corticosteriods released while under stress
depress immune responses and reduce
phagocytic cell function.
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Nutritional Deficiencies
Vitamin B Complex = gingivitis, glossitis
and angular cheilitis.
Vitamin C (Scurvy) = bleeding, swollen
gingiva and loose teeth.
Protein = accentuates the destructiveeffects of local irritants.
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Psychosomatic
Injuring the oral cavity through
development of habits
e.g. chewing pens, finger nails, smoking
pipes, or self-inflicted injuries
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Drugs
&the Periodontium
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Revise: Drugs & Dentistry
1. Drugs for systemic conditions.
2. Drugs prescribed by dentists: Local anaesthetics
Antibiotics Analgesics
Antifungals
Calmatives/ sedatives
3. Emergency drug kit. 4. Drugs causing gingival overgrowth.
5. Bisphosphonates.
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Drug-Induced Gingival Overgrowth -1Phenytoin (Anticonvulsant)
Used in epilepsy, neuralgia and ventricular arrhythmias.
50% patients talking phenytoin get gingival overgrowth.
Overgrowth closely related to plaque control- good OHcannot prevent hyperplasia but may reduce incidence andseverity.
Serum level closely associated with incidence and severity dose dependent.
Proliferation of CT: both fibroblasts + collagen production.
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Drug-Induced G.O. IICyclosporin (Immunosuppressant)
Selectively inhibits T-lymphocyte immune response.
Used to prevent graft rejection and suppress auto-immune disease (e.g. Type 1 Diabetes, rheumatoid
arthritis, psoriasis).
Cell/ tissues similar to Phenytoin overgrowth.
Relationship between dosage, plasma levels andhyperplasia not proven. Equivocal relationship withplaque control.
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Drug-Induced G.O. IIICalcium Channel Blockers (BP)
Used to manage angina, hypertension and
cardiac arrhythmia.
Most common - Nifedpine and Verapamil.Nifedpine and Verapamil.Nifedpine and Verapamil.Nifedpine and Verapamil.
Nifedipine can cause hyperplasia in 15-21% of
patients:Similar to Phenytoin hyperplasia.
Few cases described for Verapamil.
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Bisphosphonates & Dentistry
Read the Dental Update 2006 review!
Basic information:
No change in protocols for NON-SURGICAL Rx.
Avoid exposing bone:
Avoid extractions promote prevention & RCT instead.
Avoid periodontal surgery including crown lengthening.
The half life of BPs is 8-10 years therefore stoppingthe medication is of limited benefit.
Warn patient of potential risks if extraction
unavoidable.
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Periodontal Medicine:
Perio-systemic interactions
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Periodontal Disease & Systemic Disease
The effect of periodontitis is not confined to the
mouth i.e. the infection has systemic effects.
Studies in the last 10 years have shown anassociation between periodontal disease and:
1. Atherosclerosis.
2. Coronary Heart Disease.3. Stroke.
4. Pre-term low birth weight babies.
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Periodontitis & Atherosclerosis
Share common risk factors:
E.g. age, male gender, smoking, fibrinogen levels,white cell counts, haematocrit and diabetes mellitus.
Periodontitis is also associated with changes inblood cell and biochemical markers, which arealso markers for cardiovascular disease:
E.g. clotting factors, fibrinogen, white cell counts andC-reactive protein (CRP).
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Perio-Atherosclerosis Mechanisms
1. Chronic infectionChronic infectionChronic infectionChronic infection (gram-negative bacteria in periodontitis)causes inflammationcauses inflammationcauses inflammationcauses inflammation:
Activated cells infiltrate into blood vessels.
Smooth muscle proliferates.
Fatty degeneration and intravascular coagulation occur.
2. LPS can increase the expression of adhesion molecules.LPS can increase the expression of adhesion molecules.LPS can increase the expression of adhesion molecules.LPS can increase the expression of adhesion molecules.
LPS from gram-negative bacteria in periodontitis can:
Cause leukocytes to infiltrate into artery walls (through& under the tunica intima).
Affect lipid metabolism when in the blood stream
leading to atherosclerosis.
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Perio-Atherosclerosis Mechanisms
3. HyperHyperHyperHyper----inflammatory traitinflammatory traitinflammatory traitinflammatory trait ---- macrophagesmacrophagesmacrophagesmacrophages:
Genetic or induced as a result of smoking/ infection (e.g.
periodontitis).
Activated macrophages produce excessive amounts of
pro-inflammatory molecules e.g. cytokines.
Activated cells excite other cells driving inflammation.
Patient becomes more likely to have atherosclerosis.
Influenced by periodontal disease, diet, lifestyle and
environmental factors.
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Low birth weight babies
Less than 2.5kg at birth.
6-7% of all births.
Increased medical problems including:
needing neonatal intensive care.
cardiovascular, diabetes and lung disease in
adulthood.
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Risk Factors for Low birth weight babies
Genetic.
Demographic:
very young or older mothers.
poor socioeconomic status.
maternal education.
Obstetric risk previous LBW babies.
Nutritional risk.
Infection - can affect gestational period.
Toxins: Smoking & Alcohol.
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Revision for Exams
Be able to identify patients who require antibiotic cover.
Know the common drugs e.g. hypertension, asthma,
antibiotics, analgesics, anti-inflammatory medications.
Diabetes & smoking are very important risk factors for
periodontitis.
Know the 3 classes of drugs that can induce gingival
overgrowth.
Remember periodontitis has a role in CVD and pre-term low
birth weight babies by driving both inflammation & infection.
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Q u e s t i o n sQ u e s t i o n sQ u e s t i o n sQ u e s t i o n s? ? ?? ? ?? ? ?? ? ?