Comparison of Parameters for Programming Adjustable Dental Articulators by Using Wax Eccentric Records and Arcus Digma Device

Abstract

ObjectivesProgramming of joint mechanism/parameters (sagittal condylar inclination and Bennett angle) of adjustable dental articulators is a prerequisite for performing positions and movements of the mandible. The aim of the study was to test significant differences between the two methods (wax eccentric records and Arcus Digma device) of measuring these joint parameters by using three different dental articulators (SAM 3, Protar 7; and Artex CR).Materials and MethodsThirty asymptomatic younger (age 25.7 ± 2.9 years) subjects (dental medicine students) divided by gender, with normal occlusion (Angle class I) participated in the study. After taking anatomical impressions of both dental arches, master casts were made of hard dental plaster for each subject. The values of the left and right sagittal condylar inclination and Bennett angle by the two methods of wax eccentric protrusive and lateral records and Arcus Digma device were measured for the purpose of programming the mentioned joint parameters in three different articulator systems.ResultsThe average values of the measured parameters of sagittal condylar inclination and Bennett angle of wax eccentric records were higher (ranging from 5ºto 10º) in relation to the values measured by Arcus Digma device. Statistically significant differences found between the measured joint parameters (p <0.025) were influenced by the articulator system design and measurement methods (t-test for dependent samples and MANOVA).ConclusionThe use of Arcus Digma device should be considered reliable and valid for individualized programming of dental articulators, rather than the use of wax eccentric records.

Comparison between cone beam CT and TMJ digital tracing to record the Bennett angle and their effect on the occlusion of complete denture

“…The TMJ digital tracing uses electromagnetic sensors to track the position of the condyles, The AR-CUS digma system, which uses an electronic sensor to measure condylar guidance in a manner similar to the pantograph, will enable clinics and technicians to measure more quickly and accurately (14) .…”

“…The present study is inconsistent with the arcus digma, there are still problems with inconvenience, the production of clinical errors, and a lack of data. Further research is needed to overcome these issues and provide a new, reliable approach (19) .…”

Evaluation Of Retention and Assessment of Biting Force Distribution of a Complete Denture Fabricated Using 3D Printed Custom Trays with Arcus Digma Versus Conventional Method (A Cross Over Study)

“…It can obtain a 3D representation of the real surfaces at real time of its movement which consequently leads to better recording and reproduction of harmonious occlusal contacts in the final prosthesis. (23) Since digital networking information is more accurate, quality controlled complete dentures can be delivered to the patients with more predictable results than the conventional technique. The digitalization of the process of the fabrication of CD permits simplification of the regular complicated treatment and tedious laboratory processes which is required for the conventional method.…”

Alsó, felső teljes fogívre kiterjedő sínpótlás harapásemeléssel, egyéni szögértékek meghatározásával

“…A számítógép ezekből a jelpárokból számolja ki a három Bonwill-pont háromdimenziós mozgásait, valamint az egyéni szögértékeket, úgymint a Bennett-szöget, a shift szöget. Ennek segítségével az artikulátor részben egyéni értékre állítható be [9].…”

“…A szup ra gin givális depurálás után jött a protetikai tervezési fázis. Ehhez első lépésként arcíves regisztrációra (KaVo) [11] (3. kép), illetve támasztócsapos regisztrációra volt szükség a centrális reláció meghatározásához [10], (4. kép) majd az egyéni szögértékek, illetve mozgáspályák megállapításához Arcus Digma (KaVo) készülékre [9] (5., 6. kép). Az így kapott adatokat felhasználva megtörtént a gipszminták részlegesen egyéni értékű beartikulálása (KaVo Protar 5 B), a megsüllyedt harapás megemelése, melyet…”