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BR-102025018856-A2 - Dental implant with conical coronal tip.

BR102025018856A2BR 102025018856 A2BR102025018856 A2BR 102025018856A2BR-102025018856-A2

Abstract

The present invention relates to a dental implant comprising a core and a plurality of threads defined on the core. The implant has a first inferior region in which an apical end is located, a second intermediate region, and a third coronal region, wherein the apical end has a conical shape comprising at least one channel. The core further has at least one chamber comprising at least two segments, wherein the first segment of the chamber has a helical shape and at least one second segment of the chamber has a linear shape.

Inventors

  • Geninho THOMÉ
  • TIAGO NUNES DE QUEIROZ
  • MARIA AUGUSTA RODRIGUES PEREIRA NUNES
  • GILBERTO APARECIDO PINTO DA FONSECA JUNIOR
  • SERGIO ROCHA BERNARDES
  • THIAGO CABRAL MEIRA CHAVES

Assignees

  • JJGC INDÚSTRIA E COMÉRCIO DE MATERIAIS DENTÁRIOS S.A.

Dates

Publication Date
20260317
Application Date
20250904

Claims (15)

  1. 1. Dental implant (1) comprising: a core (2); a plurality of threads (4) defined on the core (2); and at least one chamber (5); wherein the implant comprises a first lower region (21), a second intermediate region (22), and a third region consisting of a coronal end (3); and the dental implant (1) CHARACTERIZED in that the coronal end (3) has a truncated cone-shaped region comprising at least one channel (31).
  2. 2. Dental implant (1), according to claim 1, CHARACTERIZED in that the coronal end (3) comprises a plurality of channels (31), wherein it preferably has channels (31) along its entire length (lr3).
  3. 3. Dental implant (1), according to claim 1 or 2, CHARACTERIZED in that the coronal end (3) has a groove (31.2) positioned at the junction between the coronal end (3) and the second intermediate region (22).
  4. 4. Dental implant (1), according to any one of claims 1 to 3, CHARACTERIZED in that the coronal end (3) has a truncated cone region (31.1) above the most extreme canal (31) of the coronal end (3).
  5. 5. Dental implant (1), according to any one of claims 1 to 4, CHARACTERIZED in that the truncated cone region (31.1) has a diameter that decreases towards the second region (22).
  6. 6. Dental implant (1), according to any one of claims 1 to 5, CHARACTERIZED in that the inclination of the outer surface of the truncated conical coronal tip (3) forms a cone angle α, wherein the cone angle α is preferably 16°.
  7. 7. Dental implant (1), according to any one of claims 1 to 6, CHARACTERIZED in that the coronal end (3) has an internal orifice (33).
  8. 8. Dental implant (1), according to claim 7, CHARACTERIZED in that said internal orifice (33) has a truncated cone shape with a cone angle β, wherein the cone angle β is preferably 16°.
  9. 9. Dental implant (1), according to any one of claims 1 to 8, CHARACTERIZED in that the width of a crest of each thread (4) of the plurality of threads (4) increases gradually in a direction from an apical end (6) to a coronal end (3).
  10. 10. Dental implant (1), according to any one of claims 1 to 9, CHARACTERIZED in that at least one chamber (5) comprises a first segment (51), a second segment (52) and a third segment (53), wherein the first segment (51) of at least one chamber (5) has a helical shape, and the second (52) and third (53) segments have linear shapes parallel to a geometric median axis (7) of the implant.
  11. 11. Dental implant (1), according to claim 10, CHARACTERIZED in that the first segment (51) and the second segment (52) of at least one chamber (5) are arranged in the first lower region (21) of the implant (1).
  12. 12. Dental implant (1), according to claim 10 or 11, CHARACTERIZED in that the third segment (53) of at least one chamber (5) is disposed in the second intermediate region (22) of the implant (5).
  13. 13. Dental implant (1), according to any one of claims 1 to 12, CHARACTERIZED in that at least one chamber (5) has a spherical bottom (53).
  14. 14. Dental implant (1), according to any one of claims 1 to 13, CHARACTERIZED in that at least one chamber (5) has a flat bottom (54).
  15. 15. Dental implant (1), according to any one of claims 1 to 9 or 13 to 14, CHARACTERIZED in that at least one chamber is divided into two segments, wherein the first segment has a helical shape and is disposed in the first region (21), and the second segment has a linear shape and is disposed in the second region (22).

Description

FIELD OF THE INVENTION [001] The present invention is part of the technical field of osseointegrated dental implants, with a specific focus on dental implants capable of providing better stress distribution across the bone and tissue heights they contact. FUNDAMENTALS OF THE INVENTION [002] Osseointegrated implants are widely known medical components in technical dental practice, used for the placement of prosthetic structures, bone substitutes, or corrective components in the human skeleton. Briefly, specifically for dentistry, it is a structure made of biocompatible material, such as metal or ceramic material, surgically inserted into a patient, and can be implanted in either the maxilla or mandible. The primary purpose of an implant is to replace the root of a lost tooth, acting as a support for prosthetic components. [003] The state of the art offers a series of procedures that enable the surgical procedure for implanting these components. In general, in simplified terms, this type of surgery involves an incision in the soft tissue until the bone is reached, so that a hole can be drilled to house the dental implant, accessing different heights of bone tissue. This drilling step is currently performed using different types of drills, such as pilot drills, spherical drills, and helical drills, which perform different functions according to the specific needs of the patient, the surgical technique, and/or the location where the implant will be inserted. [004] In the field of implantology, dental implants with self-tapping capabilities (self-tapping implants) are known in the state of the art, for example, eliminating the need for drills to create threads, or implants with rounded apes that prevent injuries. An example can be seen in document US 5,312,256, which describes a dental implant with a cylindrical body and rounded apex, in which two sections with wide threads are incorporated to facilitate self-tapping and fixation in already threaded bone. [005] Another example of an osseointegrated dental implant can be seen in BR102017015490-4, which reveals an implant whose core is divided into two threaded portions with different proportions, possessing a chamber whose depth varies along its length. This implant is intended for use in various bone types, due to the constant installation torque and the gains in primary and secondary stability it provides. [006] However, despite advances in dental implant technology, current surgical techniques require the use of a wide range of drills, and if the drill sequence is not strictly followed, a number of problems can arise regarding the suitability to the different bone characteristics of the implant region, the most appropriate implant positioning, the osseointegration process, as well as aesthetic characteristics and the patient's well-being and comfort. Moreover, an appropriate drill sequence in the implant technique directly influences the success of implant placement and, consequently, how forces from human activities, such as chewing, are distributed on the dental implant, especially in its cervical region. [007] For example, current surgical techniques generally use a pilot drill or a countersink drill to prepare the area corresponding to the cervical region of the implant. Especially in denser bones, the use of this drill is even more critical, as the absence of adequate initial preparation can result in excessive compression of the cortical bone in the cervical region during insertion, increasing the installation torque. This excess mechanical stress can cause compression necrosis and subsequent marginal bone resorption, compromising initial stability and the success of osseointegration. [008] It is important to note that the cervical region of a dental implant is the upper part of the implant, close to the interface between the implant and the gum. This region is critical because it is where the implant emerges from the alveolar bone and approaches the soft tissues (gum), forming the peri-implant seal. The health and integrity of the cervical region are essential to prevent complications such as peri-implantitis, which can compromise osseointegration and long-term implant stability. This would be precisely the result of an unsuccessful implant. Furthermore, the technical characteristics of the implant's cervical region are crucial for both aesthetics and the distribution of masticatory forces. [009] In view of all this, it is clear that there are no provisions in the state of the art for dental implants whose cervical region has a geometry that reduces stress in that region. In particular, the state of the art does not provide for a dental implant whose cervical region has a conical coronal tip, and is specially designed to contribute to the distribution of forces received on the implant and those observed in the insertion process, in which this implant is successfully installed independently of the use of a pilot drill or countersink, and is also a friend