- Written by Queen Munguti for KenyaKidz
In some cases, the eruption of permanent teeth in children may delay a condition that may be caused by the alteration in the development of the tooth itself or a physical hindrance to the movement of a well-developed tooth.
“Usually children begin losing their milk teeth at the age of five it ends 13 or 14 years of age. However there may be a delay in the eruption of the permanent tooth which is supposed to take three months to appear due to genetic factors, endocrine disturbances,disturbances during tooth development, and syndromes such as Amelogensis Imperfecta,” said Dr Jyoti Bahra, of the Lotus Dental Practice in Syokimau.
“It is common to see permanent teeth erupt behind the primary incisor teeth in the lower jaw. This typically resolves itself without intervention, although professional dental monitoring is indicated. The first permanent molars erupt around 6 years of age. Teeth will sometimes erupt entirely out of the ‘normal’ anticipated sequence; this should not be a concern.”
CAUSES OF DELAY IN PERMANENT TEETH
• Genetic factors
• Endocrine disturbances- Hypothyroidism, hypopituitarism, hypoparathyroidism, and pseudohypoparathyroidism are the most common endocrine disorders associated with delayed tooth eruption. In hypopituitarism or pituitary dwarfism, the eruption and shedding of the teeth are delayed along with growth of the body. The dental arch gets smaller than normal; it cannot accommodate all the teeth, thus irregularity of teeth develops. The roots of the teeth are also shorter than normal in dwarfism.
• Disturbances during tooth development for example, Regional odontodysplasia, also called “ghost teeth,” can also lead to delayed eruption.
• Syndromes such as – Amelogensis Imperfecta, ectodermal dysplasia, bone disorders- Osteopetrosis, McCune Albright syndrome.
• Presence of supernumerary or extra tooth - The most common cause of delayed eruption of the upper permanent front teeth. Supernumerary (extra tooth) tooth can cause tooth irregularity, displacement, rotation, failure of eruption, or even delayed eruption of associated teeth.
• Root mal formations - Dilacerations
• Mal positioning of the tooth – impacted teeth
• Crowding teeth
• Cysts - that may encapsulate the growing tooth preventing eruption
• Odontoma – a collection of tooth like tissue that is abnormal found within the bone
• Congenitally missing teeth
• Trauma to the corresponding milk tooth. Injuries to milk teeth have also been implicated as a cause of delayed eruption. Injured milk tooth might fuse with the bone and so this leads to it’s over retention and hence interferes with the eruption of permanent teeth.
• Severe gingival / gum swelling can be a barrier to tooth eruption. Reasons for this could be hormonal or hereditary, vitamin C deficiency or drugs such as phenytoin.
In such cases, it is best to seek medical advice first before taking action.Normal eruption of the tooth usually resumes once the obstruction is removed