Supernumerary roots occur mainly with:

Fluorosis is caused by:

The tooth in permanent dentition is the most susceptible to dental caries is:

Four basic qualities:

The number of roots that are formed is determined by the:

All of the following does occur during the eruptive phase, except:

The term for a fertilized egg from conception until the end of two months development:

Cavity formation in a tooth, due to dental caries is due to:

All of the following does occur in the active phase of tooth eruption, except:

The cranial nerve supplies to muscles of mastication is:

The bud stage of tooth development occurs at:

One of the following does contribute to the formation of the upper lip:

The ectomesenchymal cell condensation just beneath the enamel organ is called:

All of the structure is the tooth crown except:

Neural crest cells are a temporary group of cells unique to vertebrates that arise from the embryonic ectoderm cell layer, and in turn give rise to A diverse cell lineage including:

One of the following is true about ankylosis:

The papillae that is projections on the tongue called:

Taste buds contain:

Concrescence is:

The statements about the branchial apparatus are true except:

One of the following represents the correct order of prenatal development:

The following are all derived from the stomodeal ectoderm such as:

All of the following is derived from the enamel organ except:

The Stomodeum is lined by:

One of the following is important for the development of teeth is:

Taste Bud major types Cells:

Function of gingival cervicular fluid is:

One of the following is a component of tooth germ:

The following organisms is found in deep carious lesions rather than in incipient lesions is:

Appositional stage is confined from:

In a developing tooth, if Hertwig’s sheath and the epithelial diaphragm were failed to form, the resulting tooth would exhibit:

Concrescence usually occurs with:

Appositional stage is confined to:

Taste Buds are located:

Primordium for the permanent dentition appears as an extension of dental lamina into the ectomesenchym at:

All of the following anomalies of the head and neck, except

In humans, which branchial arch rudimentary is:

The following Which contain blood vessels is:

All of the following is a functional activity of the enamel organ, except:

Concerning teratogens and their effect on fetal development:

Oral foci of Miller’s are seen in:

An oblique facial cleft is formed when the:

The nerve of the third branchial arch is:

The epithelial component of the tooth germ is known as:

The last hard dental tissue to be deposited is:

The dental lamina is induced to proliferate into a tooth bud by the:

The function of the inner enamel epithelium is:

Advanced bell stage of tooth development refers to:

In human’s fertilization normally occurs in:

The stratum intermedium:

If Hertwig’s epithelial root sheath does not disintegrate:

One group of structures is entirely derived from the dental sac:

All of the muscles mastication is involved in closing the mandible except:

Chewing sequence could be divided into:

First branchial arch is supplied by:

A unilateral cleft lip is formed when:

During the pre-eruptive phase of tooth eruption:

Initiation of dental caries depends on:

The dental sac gives rise to:

Active eruption of the tooth:

The Hertwig epithelial root sheath can’t be seen as a continuous layer in the developing root because:

The name of the second branchial arch is:

The down growth of an epithelial thickening buccal to the dental lamina is known as:

The Hertwig epithelial root sheath of disintegrates:

Another term for the deglutition of food is:

Senile carious lesions are most commonly found exclusively on the following areas of the teeth:

Eruptive phase:

Miller put forth the acidogenic theory of dental caries in the year:

Component of mastication are:

The mesenchymal cells lying adjacent to the inner enamel epithelium:

Bacteria responsible for initiation of caries is:

Cleft palate may result from all of the following except

One of muscles of mastication arise from the zygomatic arch and inserts on ramus of the mandible is:

Tongue begins to develop at:

The primary cause of periodontal disease is:

Primordium for the permanent dentition appears as an extension of dental lamina into the ectomesenchyme:

The medial pterygoid follows the same angle as masseter arising from the medial pterygoid plate, where does it attach on the mandible at:

Passive eruption is:

The caries, all are true except:

All of the following is true of parotid glands, except:

The most likely factor responsible for tooth eruption is:

The extrinsic muscles of the tongue are supplied by:

The dental sac is:

The embryological origin of the hyoid bone is:

The dental lamina initiating the permanent molars develops:

The taste sensations appear to be located from the parts of:

The name of the first branchial arch is:

One of the following indicates the major components of a tooth germ:

By the 6th week of tooth development, the oral epithelium is:

Concerning cleft lips and cleft palates:

All of the following is the ectodermal in origin, except:

Streptococcus mutans is considered to be a principal etiologic agent of caries because it produces acid and it:

The pH at which initiation of caries begins is:

The following induces the dental papilla cells to be differentiated into odontoblasts:

The cell rests of Malassez are derivatives of:

Secondary palate is:

Actual eruptive movements of tooth occur mainly in a:

Chemico-parasitic theory of dental caries is proposed by:

The secretions of salivary glands are:

After fertilization of ovum series of cell division give rise to an egg cell mass called:

The vestibular lamina gives rise to:

The probable reasons for a high incidence of dental caries in the teenage population relates most directly to:

Dental caries can be classified with respect to the site of the lesion:

The epithelial rests in the periodontal ligament are derived from:

A layer of cells that seems to be essential to enamel formation but do actually secrete the enamel except:

First stage of deglutition is:

The extrinsic muscles of the tongue:

One of the following is associated with an erupted tooth:

The apposition stage of tooth development begins:

Third stage of deglutition is:

Enamel pearls occur in:

The dental sac plays an important role in the formation of all of the following except:

One of the following occurs during the pre-eruptive phase of a tooth:

The inferior parathyroid gland originates from:

Shedding is predominantly the:

The maxillary processes:

The dietary carbohydrate most likely involved in etiology of dental caries is:

Turbid dentin in carious tooth is all except:

Pure mucous salivary gland is:

The palatal shelves:

Calcified tissues of the tooth are derived from:

Pharyngeal pouches:

Widely accepted theory of dental caries is:

One of the following Which of induces the dental papilla cells to be differentiated into odontoblasts is:

The occipital somite’s myotomes give rise to:

If the process of morphogenesis is disturbed:

All of the following is a part of the tooth germ except:

The three major salivary glands are:

Hertwig’s root sheath consists of:

For a bacterium to be seriously considered in the etiology of dental caries, it must:

One of the following causes the discolorations of teeth is:

Functions of the digestive system are:

During tooth eruption into the oral cavity, what happens to the epithelial covering of the enamel:

Caries associated with pre-eruptive enamel hypoplasia:

The muscles of mastication are derived from:

All the statement about early dental development, except:

Inner enamel epithelium:

The development of secondary palate begins from:

Regarding deglutition:

The region where the inner and outer enamel epithelium meets at the rim of the enamel organ is known as:

The palate is derived from three primordia:

The Hertwing’s epithelial root sheath is composed of:

All the statement below is true about the classification of taste, except:

Formation of the nose includes:

The following is component of the enamel organ except:

All of the following is a bout of Hertwig’s epithelial root sheath except:

The muscles are derived from the first brachial arch:

The tooth germ is composed of:

The salivary gland is:

All of the following statements about the eruption of a permanent tooth and the exfoliation of its predecessor are true, except:

The following embryonic structures contribute to the formation of lower lip:

One of the following characterize prenatal development It is:

Concerning the palate, all of the following are true, except:

Median rhomboid glossitis is:

The lateral spread of dental caries is facilitated mostly by the:

Deglutition is the complex process that:

The embryo’s stomodeum is lined by:

Facial swellings refer to:

Complete tongue activity occurs in:

The cap stage occurs between the:

The dental lamina:

Odontoblasts start their secretory activity:

Normal function of saliva:

During tooth eruption, the permanent successors of the primary teeth move occlusal and:

Streptococcus mutants is involved in dental caries initiation Other bacteria also involved is:

All of the following is a function of dental sac except:

All of the following are involved in the formation of a tooth except:

The most pronounced effect on the oral microflora of a reduction in rate of salivary flow is a:

The density of taste buds is highest:

The number of baby teeth is:

All of the following is part of the tooth germ except:

Second stage of deglutition is:

Taste bud is:

The reduced enamel epithelium is derived from:

Minor salivary glands are found throughout the mouth:

In patient with reduced salivary flow the carious incidence is:

The enamel organ:

Pharyngeal mucosa is innervated by the glossopharyngeal nerves because it develops from the:

When a tooth first erupts into the oral cavity, the attachment epithelial cuff of epithelium derived from:

An oblique facial cleft is the result of:

In the post-eruptive phase, a tooth undergoes primarily:

Most of the hard palate and all of the soft palate from the:

Deglutition problem can lead to:

Palatal processes of the maxilla are derived from:

The number of permanent teeth is:

The bell stage occurs between the:

After ovulation the ovum can be fertilized for about:

The development of the root begins when:

The map of taste buds for:

Initiation of caries by Streptococcus mutans is by the production of the:

The soft palate develops from:

Histological changes occurring during the eruptive phase:

Dental follicle cells:

Branchial arches sharing in tongue development are:

Each taste bud consists of:

The major component of dental plaque is: