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#Post#: 2503--------------------------------------------------
Sutures of the palate
By: TheGreatWork Date: August 1, 2017, 2:17 pm
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We know growth can occur at sutures with pressure applied over
time. We know that sutures do not solidify until very late in
life, and sometimes never at all. Here is an image of the
sutures on your palate (the jagged lines).
HTML https://o.quizlet.com/K0xS5daZ70nlBU996vZM8Q.png
Unsurprisingly, the palate expanders used everywhere have their
expansion screws along one or more of these sutures. Now we
average folk can see where the actual expansion is happening and
by what function.
#7, the mid maxillary suture, can be expanded by about 1mm a
week. We do not know the proper rates of expansion for the
others yet, it may differ
#Post#: 2504--------------------------------------------------
Re: Sutures of the palate
By: Progress Date: August 1, 2017, 4:08 pm
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It's interesting to note that the recommended resting spot for
the tip of the tongue seems to be located exactly at the meeting
point of the incisive sutures (2) and the mid-palatal suture
(7). I wonder whether the incisive sutures (or any other sutures
apart from the mid-palatal suture for that matter) are relevant
to palate expansion as an adult though:
¨
On mid palatal suture:
[quote]The ossification of the maxilla is much debated. There is
no argument to the fact that this is a bone that forms in
connective tissue anterior to the cartilaginous nasal capsule.
The debate is over the number of centers involved in maxillary
ossification and whether a separate element, the os incisivum -
the homologue to the premaxilla, is incorporated into the
development. The simplest scenario involves a single
ossification center arising in the body of the maxilla and
spreading to form the entire bone. Other workers suggest that
additional centers, up to two, form in the incisor region
corresponding to the premaxillary bone of other mammals. These
centers appear during the sixth embryonic week and join by the
third month. By late fetal life there exists no clear indication
of separate centers on the facial side of the bone however, on
the palate approximately 25 percent of skulls retain a suture
line at the junction of the two centers. This suture is retained
in adult skulls.[/quote]
On incisive suture:
[quote]The incisive suture is a variable suture in the adult
skull that occurs on the palatal surface of the maxilla where
the premaxillary bone joins the maxilla. This suture typically
ossifies as a synostosis and no remnant of a suture remains.
[/b]When present it is weakly serrate in form.[/quote]
HTML http://www.anatomyexpert.com/app/structure/8/979/
#Post#: 2506--------------------------------------------------
Re: Sutures of the palate
By: ThaGangsta Date: August 1, 2017, 6:07 pm
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Why are statements from those in the orthodontic field on the
midpalatal suture fusion so inconsistent? Some say it fuses to
the mid to late teens, some say by mid 30s, some say late in
life, and some say that they never fuse.
#Post#: 2511--------------------------------------------------
Re: Sutures of the palate
By: Progress Date: August 2, 2017, 2:30 pm
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[quote author=ThaGangsta link=topic=318.msg2506#msg2506
date=1501628831]
Why are statements from those in the orthodontic field on the
midpalatal suture fusion so inconsistent? Some say it fuses to
the mid to late teens, some say by mid 30s, some say late in
life, and some say that they never fuse.
[/quote]
The problem is that the rate seems to be highly individual:
[quote]Adults had great variability in sutural maturation, as
corroborated by other studies.9,11 We found that 53% of the
adults were in stage E, 31% were in stage D, 13% were in stage
C, and 1 subject (3%) was in stage B.[/quote]
HTML https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4185298/
One factor that could possibly influence the speed of sutural
maturation is pre-existing palatal width. I wouldn't be
surprised if palates closer to the genetic width potential fused
earlier than narrow palates with plenty of room for growth. It's
a shame that inter-molar width wasn't taken into account in
above study.
#Post#: 2512--------------------------------------------------
Re: Sutures of the palate
By: ThaGangsta Date: August 2, 2017, 2:56 pm
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Using that logic, I have an intermolar width of 39-40 mm and I'm
17. How likely is it that my palate has fused? What is the
genetic ideal anyway?
#Post#: 2513--------------------------------------------------
Re: Sutures of the palate
By: Progress Date: August 2, 2017, 3:52 pm
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[quote author=ThaGangsta link=topic=318.msg2512#msg2512
date=1501703806]
Using that logic, I have an intermolar width of 39-40 mm and I'm
17. How likely is it that my palate has fused? What is the
genetic ideal anyway?
[/quote]
47% chance. Your unique genetic potential is 53 mm when measured
at the second molars. Good luck.
#Post#: 2514--------------------------------------------------
Re: Sutures of the palate
By: TheGreatWork Date: August 2, 2017, 4:50 pm
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How did you calculate that ideal?
#Post#: 2515--------------------------------------------------
Re: Sutures of the palate
By: Progress Date: August 2, 2017, 5:12 pm
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I used the Pythagorean theorem to calculate the hypotenuse of
ThaGangsta's ideal dental arch. Then I rolled my neighbor's
magic dice until I hit 6 thrice in a row and converted the
amount of tries it took into percentages.
#Post#: 2518--------------------------------------------------
Re: Sutures of the palate
By: TheGreatWork Date: August 2, 2017, 6:02 pm
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[quote author=Progress link=topic=318.msg2515#msg2515
date=1501711937]
I used the Pythagorean theorem to calculate the hypotenuse of
ThaGangsta's ideal dental arch. Then I rolled my neighbor's
magic dice until I hit 6 thrice in a row and converted the
amount of tries it took into percentages.
[/quote]
HTML http://i.imgur.com/q6vCApt.gif
#Post#: 2519--------------------------------------------------
Re: Sutures of the palate
By: ThaGangsta Date: August 2, 2017, 7:11 pm
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Lol
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