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Differential Diagnosis in Dentistry Part 2


24 . Centrifugal growth pattern of bone growth is seen in:

  • Central Ossifying Fibroma
  • Central Cementifying Fibroma
  • Central Cemento-ossifying Fibroma

25. Hypermobility of Joints is seen in:

  • Ehlers Danlos Syndrome
  • Marfan's Syndrome
  • Osteogenesis Imperfecta
  • Down's Syndrome
  • ( NOTE: Hypo- mobility of joints is seen in Achondroplasia)

26. Palmar-plantar Keratosis is seen in:

  • Gorlin-Goltz Syndrome
  • Papillon-Lefevre Syndrome
  • Follicularis keratosis

27. Russel Bodies are seen in:

  • Plasma cells in Multiple Myeloma
  • Periapical Granuloma

28. Koilonychia or spoon shaped nails are seen in :

  • Plummer Vinson Syndrome (Iron Deficiency Anemia)
  • Chondro-Ectodermal Dysplasia (Ellis Van Creveld Syndrome) 

29. Juxta Epithelial Hyalinization is seen in :

  • Oral Submucous Fibrosis
  • Ameloblastic fibroma 

30. Microcyst Formation is seen in :

  • Acinic Cell Carcinoma
  • Mucoepidermoid Carcinoma
  • Neurilemmoma
  • Squamous Odontogenic Tumor

31. The Tumors which are common in the Anterior maxillary region:

  • Compound Odontoma
  • Adenomatoid Odontogenic Tumor
  • Squamous Odontognic Tumor

32. Keratin Plugging Formation is seen in :

  • Fordyce Granules
  • Verrucous Carcinoma
  • Verrucous Xanthoma
  • Keratoacanthoma
  • Discoid Lupus Erythematosus (DLE)

33. Absence of Lamina Dura is seen in:

  • Hyperparathyroidism (important feature)
  • Paget's Disease
  • Vitamin D resistant rickets (Hypophosphatemia)

34. Premature Exfoliation of teeth is seen in:

  • Juvenile Diabetes
  • Juvenile Periodontitis
  • Papillon Lefevre Syndrome
  • Chediak Higashi Syndrome
  • Letterer Siwe Syndrome
  • Eosinophilic granuloma
  • Hand Schuller Christian Disease
  • Hypophosphatasia
  • Dentin Dysplasia
  • Acrodynia (Mercury Poisoning)
  • Cherubism 
  •  (NOTE: Premature Exfoliation of primary teeth is the most common local cause of malocclusion. Prolonged retention of deciduous teeth and subsequent delay in eruption of succedaneous teeth is seen in Cleidocranial Dysplasia. )

35. Delayed Eruption of teeth is seen in :

  • Rickets
  • Cretinism (Hypothyroidism)
  • Cleidocranial dysplasia
  • Hemifacial atrophy
  • Fibrous Dysplasia
  • Dentin Dysplasia
  • Ghost teeth
  • Pituitary Dwarfism
  • (NOTE: Early eruption  of permanent teeth is seen in hyperparathyroidism.) 

36. Causes of Xerostomia :

  • Psychological causes like anxiety and Depression
  • Duct Calculi
  • Sialadenitis or inflammation of salivary glands
  • Drugs like anticholinergic and sympathomimetics, tricyclic antidepressants, bronchodilators, diuretics and antihistamines
  • Zyban, a drug that aid in cessation of smoking also found to cause Xerostomia
  • Salivary gland aplasia
  • Sjogrens syndrome
  • Ectodermal dysplasia
  • Patients under radiotherapy
  • Other Systemic disorders like polyurea, diabetes, Parkinson's disease, Cystic fibrosis and Sarcoidosis

37. Epidermoid cysts are seen in: 

  • Gardner Syndrome
  • Basal cell nevus syndrome

38. Snail Track ulcers are seen in :

  • Secondary Syphilis
  • Pyostomatitis vegetans

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