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Hematologic Diseases ( Must Know Points)

Disease
Oral manifestation
Dental consideration
Anemia (most of them)
Petechiae, Spontaneous gingival bleeding, herpetic infection, glossitis, stomatitis, angular cheilitis, pale oral mucosa, oral candidiasis, RAS, erythematous mucositis, burning mouth.

·        Goal: establish and maintain good oral health, thus reducing the risk of an oral infection.
·        For patients who are severely neutropenic (neutrophil count <200/micro lit), prophylactic antibiotic and antifungal should be used and foods that may be contaminated with bacteria or fungal pathogens avoided.
·        Attention to details of oral hygiene and hand washing and avoidance of minor injuries and exposure to infectious agents can reduce risk of serious complications

Polycythemia vera
PV can manifest intraorally with erythema (red-purple color) of mucosa, glossitis, and erythematous, edematous gingiva.
Spontaneous gingival bleeding can occur because the principal sites for hemorrhage, although rare, are reported to be the skin, mucous membranes, and gastrointestinal tract.

·        Control of hemorrhage after dental surgery should be considered
·        Clinically significant bleeding may require platelet transfusion and a role for e-aminocaproic acid and tranexamic acid has been suggested by some. Other measures to consider in preparing the patient with PV for routine dental surgery include obtaining better control of blood counts by phlebotomy or drug therapy and adjustment of any concomitant antiplatelet and/or anticoagulant therapy.
Sickle cell disease
Higher risk of osteomyelitis (Salmonella and Staphylococcous Aureus.
Radiographic findings in patients with SCA include a “stepladder” trabeculae pattern (70%), enamel hypomineralization (24%), calcified canals (5%), increased overbite (30–80%), and increased overjet (56%). Patients may also have pallor of the oral mucosa and delayed eruption of the teeth.

The need for antibiotic prophylaxis is controversial.
Other management considerations for patients with SCA include maintaining good oral hygiene, routine care during noncrisis periods, aggressive treatment of oral infection, avoidance of use of aspirin, caution with respiratory-depressing conscious sedation, and avoidance of long, stressful dental visits. Use of nitrous oxide–oxygen for anxiolysis is safe, with maintenance of adequate flow rates.


Hematologic Diseases
(Few must know aspects)


Thalassemia
Radiographic features of jaws and teeth among people with thalassemia major include the appearance of spiky-shaped and short roots, taurodontism, attenuated lamina dura, enlarged bone marrow spaces, small maxillary sinuses, absence of inferior alveolar canal, and thin cortex of the mandible.
“chipmunk faces”
Dental arch morphologic changes include a narrower maxilla and smaller incisor widths for the maxillary and mandibular arches.64 Consistent with gen- eral growth retardation, dental development of patients with b-thalassemia major was found to be delayed by a mean of 1.01 years, increased with age, and was higher for boys than girls compared with unaffected children.
higher dental caries experience
The primary concern is the level of anemia; however, it is rarely of clinical significance.

White blood cell disorder
Enlarged gingiva, oral ulcers, oral infection due to immune suppression from disease or therapy
recurrent gingivitis, severe periodontitis, alveolar bone loss, and ulceration.

·        Measures to decrease sources of infection.
·        Prophylactic antibiotics have historically been recommended by some for patients with a hematologic malignancy–caused ANC <1,000 cells/mm3 prior to dental extractions.
·        Typically in the dental setting, the drugs and regimens supported by the most recent American Heart Association guidelines for infective endocarditis prevention are used prior to invasive dental procedures.
Refer your seminars for leukemia, lymphoma, chediak higashi syndrome and additional essential readings, especially hematologic investigations and bleeding and clotting disorders.



EVALUATION SCHEME FOR COMMUNITY & PUBLIC HEALTH DENTISTRY BDS THIRD YEAR


EVALUATION SCHEME FOR COMMUNITY & PUBLIC HEALTH DENTISTRY   BDS THIRD YEAR
SECTION
TOPICS (THEORY)
TOTAL MARKS = 80
Time
SECTION A MCQ
ALL TOPICS
30 MARKS
30 mins









SECTION B SAQ

1.     Introduction/concepts of health/Basics of epidemiology, Environmental science and health, Nutrition, Demography
2.     Dental Public Health/Health Education and communication
3.     Survey and analysis, Planning and evaluation
4.     Research methodology and Biostatistics
5.     Ethics, Oral health program and policies
6.     Behavior sciences ,Dental Health Human resource

1.     6 marks

2.     5 marks


3.     5marks

4.     3 marks

5.     3 marks

6.     3 marks

TOTAL =25




150 mins
(Section B and C)








SECTION C
SAQ

1.     Indices used in Dental public health
2.     Preventive Dentistry
3.     Fluorides
4.     Practice management, Occupational hazards
5.     School oral Health Program, Tobacco as a threat to oral health
6.     Epidemiology and prevention of dental diseases




  1. 3 marks
  2. 5marks
  3. 6marks
  4. 3 marks
  5. 3marks
  6. 5 marks
TOTAL =25



NOTE:
-        One Problem-based question (PBQ’s) should be asked from section B or C.
-        MCQ’s will be single response type with 4 alternatives
-        MCQ’s distracter should not be ‘all of the above’ or ‘none of the above’.


Model Question
Community & Public Health Dentistry
3rd Year BDS
SECTION A (MCQs)

1)     Nalgonda technique is used for
a)      Community water fluoridation
b)     Community defluoridation
c)      Salt fluoridation
d)     Milk fluoridation
Answer b

2)     Which generation of pit and fissure sealants consist of fluoride
a)      First
b)     Second
c)      Third
d)     Fourth
Answer d

3)     The most widely recommended method of removing plaque from proximal tooth surface is
a)      Unituft brush
b)     Dental floss
c)      Oral irrigating devices
d)     Chemical plaque control
Answer b

4)     Hospital acquired infection is:
a)      Water borne
b)     Contagious
c)      Opportunistic
d)     Nosocomial
Answer d

5)     When knowledge is instilled in the individual’s mind with readymade slogans, it is called
a)      Health education
b)     Health propaganda
c)      Health development
d)     Health motivation
Answer b



 
SECTION B                                                                                                       25 MARKS
1)     Define health. Enumerate the changing concepts of health. Write down the three elements and principles of primary health care. [1+2+3=6]

2)    


 
Enlist the tools of dental public health. Differentiate between private practice and public health dentistry. [2+3=5]


 
 

3)     Classify the various types of surveys. Write about the steps of surveying. [2+3=5]

4)    


 
Write short notes on: [3x3=9]
a.     Types of consent
b.     Functions of School dental nurse
c.      Characteristics of Normal distribution curve

SECTION C                                                                                                         25 MARKS 
5.     A 2 year old child weighing 10 kg accidentally swallowed a bottle of liquid containing 200 mg of fluoride. [2+2+2=6]

a)     What is the probable diagnosis of this condition?
b)     What could be the possible complications?
c)     How will you manage such complications?

6.     Enlist types of pit and fissure sealants. Write indications and contraindications of sealant. Mention types of Preventive Resin Restoration. [2+2+1=5]

7.     Enlist the various mechanical plaque control aids. Mention the levels of prevention of periodontal disease. [2+3=5]

8.     Short notes [3x3=9]
a)     DMFT Index
b)     Provisions of WHO – Framework Convention of Tobacco Control (FCTC)
c)     Types of Chemical disinfectants



PRACTICAL/CLINICAL EXAMINATION MARKS ALLOTMENT

University Practical Exam: 80 Marks                                           

1.     Practical Exercise – Case history, diagnosis, Comprehensive treatment planning, chair-side viva (20 marks)
2.     Index recording (10 marks)
3.     Preventive procedure (10 marks)
a.     ART, Pit and fissure sealants on extracted teeth
b.     Fluoride application
c.      Plaque control measures
d.     Oral health education
4.     OSPE (Objective structured practical exercise) [1X10=10 marks]
5.     Viva (20 marks)
6.     Project work (5 marks)
7.     Log book (5 marks)

PRACTICAL/CLINICAL WORK QUOTA
SN
Exercises
Quota
1
Comprehensive  case history taking and treatment planning
4
2
Indices
·        OHIS
·        DMFT/DMFS
·        deft/defs
·        Plaque index
·        Gingival index
·        CPI/CPITN
·        Russell’s Periodontal Index


4
4
2
2
2
2
2
3
Fluoride application
2
4
Atraumatic Restorative Treatment
3
5
Pit and fissure sealant
2
6
Plaque control
1
7
Water purification plant
1 visit
8
Waste management
1 visit
9
PHC
1 visit
10
Project work
1 group work