DENTAL IMPLANT

Abstract

The present invention relates to the field of dental implants, and more specifically to optimization of the macrogeometry of the implant to improve osseointegration. To achieve this improvement, the dental implant (1) contains cylindrical recesses (2) extending from the tip of the thread (6) towards the body of the implant (4), enabling improved blood irrigation, less insertion torque without losing primary stability, and creating osseointegration chambers.

Claims

1. A dental implant (1) having a cylindrical or conical body, comprising a thread and characterized by presenting cylindrical recesses (2) starting from the tip of the thread (6), passing through its flank (5) towards the body of the implant (4), with the recesses (2) being located on the upper and/or lower flanks of the thread (5) and having distance (L) between the consecutive recesses less than 4 times the width of the recess (a).

2. (canceled)

3. (canceled)

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 represents a view of the implant with optimized macrogeometry (1).

[0015] FIG. 2 represents a common implant (3).

[0016] FIG. 3 represents a view highlighting detail of the optimized macrogeometry.

[0017] FIG. 4 represents the graph of the removal torque for the implant with optimized macrogeometry and for the common implant.

[0018] FIG. 5 represents the formation of new bone tissue on the surface of the implant with optimized macrogeometry after 4 weeks.

[0019] FIG. 6 represents the formation of new bone tissue on the surface of the common implant after 4 weeks.

[0020] FIG. 7 represents the placement method of an implant.

[0021] FIG. 8 shows the ratio between the width of the recesses and the distance therebetween.

DETAILED DESCRIPTION OF THE INVENTION

[0022] Dental implant (1), preferably made of titanium, which may be cylindrical or conical, comprising a thread and characterized by presenting cylindrical recesses (2) starting from the tip of the thread (6), passing through the upper and/or lower flank (5) towards the body of the implant (4).

[0023] The number of cylindrical recesses (2) may vary according to the distance (L) between the consecutive recesses (2) and the width (a) of the recesses. For the implant to present improvements over the state of the art, the distance (L) must be less than 4 (four) times the width of the recess (a). For distances (L) greater than 4 times the width of the recess (a), the improvements achieved in the integration of the implant with the bone are reduced.

[0024] The arrangement of the implant submitted for study is made of titanium, having a diameter of 4 mm at its upper part, 3 mm at its lower part, a thread pitch of 1 mm, radius of the recesses (2) measuring 0.35 mm, a length of 10 mm and having 6 recesses for each turn of the thread.

[0025] The sizes of the implant may vary, and may be 3.5 mm to 6 mm in diameter at its upper part, 2.5 mm to 4 mm in diameter at its lower part, a thread pitch of 0.75 mm to 1.25 mm, radius of the recesses (2) not exceeding 1 mm, a length of 5 mm to 20 mm and amount of recesses for each turn of the thread in accordance with the criterion cited previously.

[0026] In its upper region, the implant (1) comprises the most varied types of encasement of the prosthesis elements present in the state of the art, including: internal hexagon, external hexagon and Morse taper.