Int J Stomatol

Int J Stomatol ›› 2023, Vol. 50 ›› Issue (5): 499-505.doi: 10.7518/gjkq.2023084

• Expert Forum •     Next Articles

Introducing a novel digital articulation workflow with high precision

Liu Yang1(),Yin Deqiang2   

  1. 1.State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Dept. of Temporomandibular Joint, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
    2.Dept. of Engineering Mechanics, College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
  • Received:2023-04-01 Revised:2023-06-18 Online:2023-09-25 Published:2023-09-01
  • Contact: Yang Liu E-mail:liu@scu.edu.cn

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Abstract:

The occlusion and the mandible position are interrelated within a constantly changing balance. Alterations in occlusion can lead to changes in the mandible position, and vice versa. In clinical work, this balance can be disrupted due to changes in the bite, resulting in various corresponding manifestations; it can be rebuilt to achieve the therapeutic purpose by articulation. Given the limitation of tools, traditional interventions produce large systematic errors when adjusting the occlusal position, resulting in unstable clinical treatment effects with difficulties in operations. With the help of a no-vel digital workflow, a personalized fine digital occlusion model can be built based on the patient’s CT data and digital dental cast. Precise articulation is then entitled, with the previous systematic error eliminated. The clinical outcome is enhanced, and the treatment efficiency is improved. In addition, digitalization can standardize the clinical operation process, reduce the skill demand, and make remote diagnosis and treatment planning possible in near future.

Key words: jaw position adjustment, virtue articulator, remote treatment planning, AVIA system

CLC Number: 

  • R 783

TrendMD: 

Fig 1

The mandible position was changed after a crown tried in, resulted in an altered maximum bite"

Fig 2

The premature contract on an oblique surface could guide the subsequent sliding, and cause the mandible position change"

Fig 3

The change in bite could cause the load change in the joints"

Fig 4

Significant changes in the disc-condylar relationship before and after wearing the splint"

Fig 5

A properly designed splint can immediately eliminate the clic-king and deviation during mouth opening"

Fig 6

Raising the incisal pin can simulate the mouth opening movement on the articulator"

Fig 7

Schematic diagram of the articulator simulating the protrusion"

Fig 8

The arbitrary face bow transfer fails to correspond the condyle with the condyle ball"

Fig 9

Error analysis of articulator simulation"

Fig 10

Measurements based on the magnetic resonance image (left), entitle the according adjustments on the articulator (right)"

Fig 11

Constructing a personalized fine three-dimensional model of the oral and maxillofacial region"

Fig 12

The AVIA system can accurately regulate the spatial position of the condyle (A) and mandible (B)"

Fig 13

The AVIA system can precisely regulate the occlusal relationship"

Fig 14

The guiding splint (yellow) can be digitally designed based on the treatment bite"

Fig 15

The normal disc-condyle relation can be restored, in different kind displacement"

Fig 16

The appearance can be changed after the articulation, and the aesthetics improved"

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