Re: Fw: New Question-ORE2/MJDF2-ANSWER

[Guest guest]

Sent from my iPhoneOn Jun 17, 2011, at 2:39 PM, Dr Avery <avery_dr@...> wrote:

Hi guysYou answered correctly..,but I want to expand the answer,hope it helps.Causes of an anterior open bite:

skeletal discrepancy–increased vertical dimension commonly

associated with a backward growth rotationsoft tissues factorsendogenous tongue thrustmuscle tone disorders such as myopathydental factorsfailure of eruption of teethinfra-occluded teethhabits such as digit sucking.

There has been some suggestion that mouth breathing

can lead to a increase in vertical growth, but the evidence is very poor and

contradictory and therefore inconclusive.

B. Skeletal discrepancy is the most likely cause in

this patient. The open bite is extensive with occlusal contact on the first

permanent molars only. Anterior open bites due to tongue thrusting and digit

sucking habits are more localised to the anterior teeth.

C. Treatment options:

acceptorthodontic alignment and accept the open bitejoint orthodontic/orthognathic approach due fully correct the

skeletal discrepancy

LeeFrom: Dr Avery <avery_dr@...>Subject: New Question-ORE2/MJDF2 Date: Thursday, 16 June, 2011, 7:50

Dear AllWe included some questions that can appear in the MJDF part 2 and ORE2(OSCES,additional qs from examiners).Lets think of answers and disscuss them.A. What are the causes of an anterior open bite?

B. What is the most probable cause in this patient

and why?

C. What are the treatment options for this patient?

Good luckLee

<images.jpg>