3D Printing in Pediatric Dentistry

Pediatric dentistry requires highly specialized approaches due to the unique anatomical, physiological, and psychological needs of children. Traditional dental practices often face challenges in achieving precision, comfort, and cooperation from young patients. The advent of 3D printing, also referred to as additive manufacturing, addresses these limitations by enabling the production of highly customized dental devices with unmatched accuracy.

HISTORY OF 3D PRINTING

The early stages of 3D printing technology date back to 1980 when Dr. Kodama from Japan introduced the concept, initially known as rapid prototyping (RP). In 1986 The stereo lithography (SLT) device was patented by Chuck Hull. Then, in 1987, Carl Deckard of the University of Texas used selective laser sintering (SLS) for RP at the same time. The term "selective laser melting" originated in 1989 when Scott Crump patented his melting layer modeling equipment. In 2008 with the creation of the first 3D-printed prosthetic leg. The first successful 3D-printed jaw was produced in 2012. Furthermore, in 2015, the University of Michigan introduced the first implanted 3D-printed bioresorbable scaffold for periodontal repair.

Principles Of 3D Printing in Dentistry

Additive Manufacturing

Additive manufacturing, commonly known as 3D printing, is a manufacturing process that enables the precise shaping of objects using Computer-Aided Design scanners or 3D object scanners. In contrast to conventional manufacturing techniques, which frequently call for milling or other procedures to eliminate extra material, 3D printing constructs things layer by layer. However, in 3D printing, this occurs in three dimensions through the crystallization, solidification, or bonding of liquid material or powder at various points during the printing process, guided by CAD.

Stage of Processing In 3d Printing

The process of 3D object printing consists of a specific sequence of controlled processing stages:

· Stage 1: Generating a three-dimensional file utilizing CAD software.

· Stage 2: converting the 3D file into an STL file format that the printer can read.

· Stage 3: The STL file is imported into a slicing program, often referred to as a slicer, which divides the model into layers and generates G-code instructions for CNC machines and 3D printers. This step is crucial for the actual printing of the model.

· Stage 4: The layer-by-layer printing of a three-dimensional model

· Stage 5: Processing

Biomaterials In 3D Printing

Biomaterials encompass both natural and synthetic materials employed for the replacement of organs or the repair of injured tissues within the body. These biomaterials can be classified into four main types based on their chemical composition: metals, ceramics, polymers, and composites. Within the field of dentistry and orthopedics, metallic and polymeric biomaterials find prominent use, offering advantageous mechanical properties, stability, and elasticity. Polymers, in particular, have found widespread application in various biomedical contexts.