Rev. Rom de STOMATOLOGIE nr.1 - 2007.p65 - medica.ro
Rev. Rom de STOMATOLOGIE nr.1 - 2007.p65 - medica.ro
Rev. Rom de STOMATOLOGIE nr.1 - 2007.p65 - medica.ro
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26 REVISTA ROMÂNÅ DE <st<strong>ro</strong>ng>STOMATOLOGIE</st<strong>ro</strong>ng> – VOL. LIII, NR. 1, AN 2007<br />
mai multor meto<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> clinice, nu existå siguran¡a<br />
ob¡inerii pozi¡iei orizontale optime a mandibulei.<br />
Acest articol p<strong>ro</strong>pune utilizarea unui dispozitiv<br />
individualizat pentru înregistrarea unghiului gotic<br />
¿i pentru verificarea ¿i eventual corectarea pozi¡iei<br />
<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> rela¡ie centricå ob¡inute în urma unei înregistråri<br />
preliminare. Placu¡a <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> înregistrare a acestui dispozitiv<br />
este din acrilat, iar stiletul inscriptor este<br />
fixat pe ¿ablonul antagonist la dimensiunea verticalå<br />
stabilitå pe articulator conform înregistrårii<br />
preliminare. Pacientul realizeazå ini¡ial o trasare a<br />
unghiului gotic pe placu¡a <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> marcare ¿i apoi se<br />
repetå mai multe meto<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>terminare a RC.<br />
Punctul corespunzåtor RC råmâne marcat nu doar<br />
în mediul <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> marcare, ci ¿i în acrilatul placu¡ei <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng><br />
înregistrare, permi¡ând o i<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>ntificare preciså a punctului<br />
focalizat, ob¡inut în urma unor <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>terminåri<br />
repetate corecte. Înregistrarea astfel ob¡inutå este<br />
comparatå pe articulator cu înregistrarea preliminarå.<br />
Dacå este necesar, se realizeazå remontarea<br />
mo<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>lului mandibular. Acela¿i dispozitiv poate fi<br />
utilizat apoi pentru reglarea ghidajelor condiliene<br />
ale articulatorului, precum ¿i pentru reglarea unghiurilor<br />
Bennett. În plus, poate fi utilizat ¿i pentru<br />
compararea rep<strong>ro</strong>ductibilitå¡ii pozi¡iei <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> RC ob¡inute<br />
prin mai multe meto<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> clinice. Aplica¡iile practice<br />
ale acestui dispozitiv ¿i rezultatele clinice ob¡inute<br />
îl recomandå pentru utilizarea sa în cazuri<br />
dificile.<br />
USING AN INDIVIDUALIZED DEVICE FOR<br />
TRACING THE GOTHIC ARCH AND CHECKING<br />
THE REGISTRATION OF THE CENTRIC<br />
RELATION IN AN EDENTULOUS PATIENTS<br />
Ingrid Pintilie, MD, Assist. P<strong>ro</strong>f.<br />
Faculty of Dental Medicine,<br />
Clinic for Dental P<strong>ro</strong>sthetics,<br />
„Ca<strong>ro</strong>l Davila“ UMF, Bucharest<br />
Emilian Hutu, MD, PhD<br />
Faculty of Dental Medicine,<br />
Chair for Dental P<strong>ro</strong>sthetics,<br />
„Titu Maiorescu“ University, Bucharest<br />
Abstract<br />
The correct <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>termination of centric relation<br />
(CR) is essential in the p<strong>ro</strong>sthodontic treatment for<br />
e<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>ntulous patients. Though, there are some<br />
difficult cases where, even by the use of several<br />
clinical methods, we can‘t have the certainty of<br />
getting the optimum horizontal position of the<br />
mandible. This article suggests the using of a<br />
costumized gothic arch tracer to check and eventually<br />
correct a position obtained th<strong>ro</strong>ugh a preliminary<br />
CR record. The registration plate of this<br />
<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>vice is ma<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng> of autopolymerizing acrylic resin<br />
and the central bearing pin is fixed to the antagonist<br />
record base at the correct vertical dimension which<br />
is set on articulator according to the preliminary<br />
record. Initially, the pacient realizes a tracing of<br />
the gothic arch on the registration plate and then<br />
several methods for the CR <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>termination are<br />
repeated. The corresponding CR point remains<br />
registered not only in the registration medium but<br />
also in the acrylic resin of the registration plate<br />
allowing an accurate i<st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>ntification of the focused<br />
point which was obtained th<strong>ro</strong>ugh some repeated<br />
correct <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>terminations. The record obtained this<br />
way is compared to the preliminary record on the<br />
articulator. If necessary it can be realized the remounting<br />
of the mandibular cast. The same <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>vice<br />
can be used to set the condylar guidance as well<br />
as the Bennett angles of the articulator. In addition,<br />
it also can be used to compare the rep<strong>ro</strong>ducibility<br />
of CR position obtained by several clinical methods.<br />
The practical applications of this <st<strong>ro</strong>ng>de</st<strong>ro</strong>ng>vice and<br />
the clinical results obtained recommend it to be<br />
used in difficult cases.