* Humans have two Sets of teeth: Primary & Secondary. * We have 20 Milk Teeth & 32 Permanent Teeth. * The eruption pattern of milk teeth & permanent teeth showed in diagram. . The Eruption pattern may vary according to Following factors. Local factor - Presence of fibrous connective tissue overlying the tooth. - Ankylosed Teeth Systemic Factors - Premature Birth Chronic Illness Nutritional status Primary Teeth (Milk Teeth) -Primary teeth also called as Milk Teeth. - In most children the eruption of primary teeth is preceded by increased salivation & ch...