Infection Control, Restoration, Orthodontic Serise, Endodontic, Polishing Serise – Tribest Dental Products Co., Ltd.

+86-13705296836

+86-511-88092762

How are dental models made?

You are here:

How are dental models made?

Dental models are important diagnostic and treatment planning tools in dentistry that allow for the replication of intricate details of a patient’s mouth outside the oral cavity. These models allow dental professionals to thoroughly examine tooth alignment, occlusion, and overall oral structure to arrive at more accurate diagnoses and more effective treatment strategies. The process of creating dental models involves several stages, combining traditional mold-taking techniques with modern casting methods. In this article, we will provide an in-depth look at how dental models are crafted, from obtaining the initial impression to making the final model.

Dental-teeth-model-800-800

1. Mold taking

The first step in making a dental model is to take an impression of the patient’s teeth and surrounding tissues. This requires the use of impression materials, usually silicone-based or alginate impression materials, which accurately capture the finest details:

PREPARATION: The dentist or dental assistant ensures that the mouth is clean and dry, then applies a thin layer of lubricant or adhesive to the surface of the tissue to prevent the impression material from sticking.

MIXING: Mix the selected impression material according to the manufacturer’s instructions to achieve the proper consistency.

PLACEMENT: Carefully place the mixture into the patient’s mouth, using a tray that fits over the teeth to ensure even distribution of the material. Instruct the patient to gently bite down to ensure all surfaces are covered.

SOLIDATION: The material sets within a few minutes and is then removed from the mouth to capture any negative impressions of oral structures.

2. Casting the model

After the impression is removed, the impression will be sent to the dental technician’s office or fabricated in-house as follows:

Preparation: The impression is checked for any defects or bubbles and excess material is trimmed to ensure a clean working surface.

Boxing: The impression is then surrounded by a two-part dental stone or plaster mold frame (called a cast) to create a stable base for pouring the model material. The key is inserted so that the top and bottom parts are properly aligned.

POURING: Liquid dental stone (a type of plaster) is mixed to a precise consistency and carefully poured into the impression. The solidification reaction will harden the material and replicate the oral structure in a positive shape.

Setting and Separation: After the tartar has set (usually about 30 minutes), the cast is separated to reveal the dental model. Excess tartar is trimmed away and the model is carefully extracted from the impression.

Dental-teeth-model-800-800 (3)

3. Finishing and mounting

The newly fabricated dental model is further processed to improve its usefulness:

Trimming and polishing: Rough edges or excess tartar are trimmed using turning pins and polishing tools to refine the shape and surface of the model. Polishing can also be done to smooth the surface.

BASE MOUNTING: Models are usually mounted on a sturdy base made of plastic or metal to provide stability and ease of handling during inspection or demonstration.

Occlusion (optional): For a complete representation of the occlusal relationship, the upper and lower models are articulated using an articulating device to simulate jaw movement and help analyze the occlusion.

Dental-teeth-model-800-800 (1)

4. Digital workflow (alternative)

In recent years, digital dental technology has revolutionized the process of making dental models:

Intraoral Scanning: Intraoral Scanning**: A series of images are captured in the patient’s mouth using a digital scanner, which are then edited into a high-precision, three-dimensional digital model instead of a traditional impression.

CAD/CAM Design: The digital model is manipulated using computer-aided design (CAD) software to develop treatment plans, design restorations, or for educational purposes.

3D Printing: The final digital design can be sent to a 3D printer, which prints out layers of resin or other materials to actually create the dental model.

Conclusion

The process of making dental models combines manual skills with advanced technology to create an exact replica of a patient’s mouth. Whether through traditional casting methods or digital workflows, dental models are an indispensable tool to facilitate accurate diagnosis, effective communication, and meticulous treatment planning. As dental technology continues to evolve, the methods used to create these models may become more streamlined and efficient, improving the overall quality of dental care.

Related News

Get A Free Quote

*We respect your confidentiality and all information is protected.