Children with age group between 6 to 18 years will be screened for inclusion and exclusion criteria. Participants will be recruited in study on rendering informed consent. This study will be conducted in the department of Pediatric and Preventive Dentistry of Sri Venkateswara dental college & hospital and Schools in Chennai. Assessment of tongue-tie by Kotlow assessment is by using quick tongue tie assessment tool. Measurements of the free tongue is carried out with maximum mouth opening and tip of the tongue touching the palatal papilla with results expressed in and read to the nearest millimeter and graded accordingly.

Clinical assessment tool measurements assessing functional and intraoral soft tissue determinants are recorded during a routine dental examination.

Depending on the selection criteria as mentioned above the children will be categorized into two groups:

Group 1: Tongue tied (test)

Group 2: Non tongue tied (control)

 The study involved six main components in control and test group:

(i) Functional measurement of tongue mobility,

(ii) Inter canine measurement of the maxillary arches using intraoral scanner and

(iii) Intermolar measurement of the maxillary arches using intraoral scanner,

(iv) Assessment of nasal breathing,

(v) Mallampati score

(vi) Angle molar classification

Measurements of tongue mobility using TRMR [Tongue Range of Motion Ratio] are performed with TIP [tongue tip extended towards the incisive papilla] and LPS [lingual-palatal suction] functional movements. Assessment of tongue mobility is by using quick tongue tie assessment tool. Intercanine distance is assessed by intraoral scanner by measuring the distance between Maxillary Canine tips.Intermolar distance is also assessed by intraoral scanner by measuring the distance between Maxillary first molar mesiobuccal cusp tips.For Nasal breathing test assessment, Lips and mouth of the subject were sealed completely with gentle MicroPore paper tape. A timer was used to assess how long the subject could comfortably breathe through the nose for up to 180 seconds with the lips and mouth taped. Subjects were deemed to pass the test if they could successfully breathe through the nose for three minutes.For Mallampati score assessment, the patient is seated in the upright position and opens their mouth while maximally protruding their tongue.Intraoral scanner is used for assessing the molar relationship (Anteroposterior arch relationship) on the basis of Angle’s definition.Children sleep habit questionnaire is used to assess sleep of the chidren.