Patents Assigned to Kerrhawe SA
  • Patent number: 9452027
    Abstract: A vibrating applicator is provided for applying a dental composite material onto a tooth. The applicator has an elongated body and a tip that is coupled to the elongated body to apply the dental composite material onto the tooth. The applicator further has a vibrating apparatus for vibrating the tip and a sensor for sensing a condition of the dental composite material. A controller is operatively coupled to the vibrating apparatus and to the sensor and is configured to automatically vary an output frequency of the vibrating apparatus in response to the condition sensed by the sensor.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: September 27, 2016
    Assignee: KerrHawe SA
    Inventors: Beat Kilcher, Marco Da Rold
  • Patent number: 8992224
    Abstract: The method of curing a dental composite includes forming a composite filling in a cavity of a tooth surface by filling the cavity with an uncured composite and determining the geometry of the composite filling, including locations of interfaces between the composite filling and the tooth surface. The method further includes calculating a predetermined polymerization pattern for minimizing shrinkage stress at the interfaces, based on the geometry of the composite filling, and scanning a focused laser beam across the composite filling in accordance with the predetermined polymerization pattern to selectively and progressively cure the composite filling.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 31, 2015
    Assignee: KerrHawe SA
    Inventors: Beat Kilcher, Vahik Krikorian
  • Publication number: 20140106297
    Abstract: A dental bur and method for removing a soft deposit from a tooth or an implant, the bur having a shank adapted to be connected to a rotary device. A head extends from the shank. The head has a material hardness adapted to remove soft deposits attached to the tooth but deflect against the tooth. Furthermore, the head is sized for insertion into a periodontal pocket adjacent to the tooth without surgery. Thus, the dental bur may be rotated against the tooth for removing the soft deposits but deflect and/or wear against the tooth for preventing damage to the tooth.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 17, 2014
    Applicants: University of Zurich, KerrHawe SA
    Inventors: Patrick R. Schmidlin, Beat Kilcher, Marco Da Rold
  • Patent number: 8518380
    Abstract: A prophylactic (prophy) paste composition comprising about 40 percent by weight to about 55 percent by weight expanded perlite comprising perlite granules in the range of about 20 ?m to about 70 ?m and floaters. The prophy paste composition further comprises no more than 5 percent by weight of a surfactant, and greater than about 10 percent by weight water. In some embodiments, the inventive paste also contains a humectant and optionally, may contain coloring agents, preservative agents, alcohol, flavoring agents, viscosity increasing agents, and sodium fluoride. The present invention also provides methods for controlling the floater content of the expanded perlite used in the inventive paste and methods of packaging the expanded perlite paste composition in a tube. The present invention also provides a prophy paste product comprising the inventive prophy paste contained within a squeezable tube.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: August 27, 2013
    Assignee: KerrHawe SA
    Inventors: Patrizia Balmelli, Beat Kilcher
  • Patent number: 8011924
    Abstract: The present invention relates to the affixation of dental dams and Class III matrixes utilized in conservative dentistry and oral surgery. In particular, the present invention relates to a device and method for retaining and stabilizing a dental dam or Class III matrix, or other device, in the mouth of the patient, which can be clamped between two adjacent teeth.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: September 6, 2011
    Assignee: KerrHawe SA
    Inventors: Beat Kilcher, Marco Da Rold
  • Patent number: 7648361
    Abstract: A dental dam clamp comprises first and second spaced, opposing jaws and respective first and second tooth engaging portions on the jaws. The first and second tooth engaging portions are positioned in confronting relation to one another and are biased toward one another by a resilient member when the jaws are moved outwardly from a free state defining a first position of the jaws. In one embodiment, first ends of the tooth engaging portions are spaced closer together than the second ends of the tooth engaging portions when the jaws are in the first position. The spacing between the first ends of the tooth engaging portions may be substantially the same as the spacing between the second ends of the tooth engaging portions when the jaws are moved outwardly to a second position. In another embodiment, the tooth engaging portions include friction-increasing surfaces to help secure the clamp to a tooth.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: January 19, 2010
    Assignee: KerrHawe SA
    Inventors: Beat Kilcher, Marco DaRold, Valerie Boscherini-DaSilva, Luca Pedrinis
  • Patent number: 7331788
    Abstract: The present invention relates to the affixation of dental dams and Class III matrixes utilized in conservative dentistry and oral surgery. In particular, the present invention relates to a device and method for retaining and stabilizing a dental dam or Class III matrix, or other device, in the mouth of the patient, which can be clamped between 2 adjacent teeth.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: February 19, 2008
    Assignee: KerrHawe SA
    Inventors: Beat Kilcher, Marco Da Rold
  • Patent number: 7195395
    Abstract: A dental sensor clamp has a clamp body with a connector on one end for connecting the sensor clamp to a bite plate. A clamp body opposite end has a fixed stop locatable adjacent an apical area of a tooth. A clamping slide is mounted within a thickness of the clamp body, and the clamping slide supports a member providing a resilient clamping force upon the member being moved against the sensor and the fixed stop. The dental sensor clamp reliably secures an imaging sensor adjacent the apical area of the tooth.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: March 27, 2007
    Assignee: KerrHawe SA
    Inventors: Antony Quarry, Beat Kilcher, Marco Da Rold, Rolf M. Klauser
  • Patent number: 7077652
    Abstract: The cheek and lip retractor for dentistry comprises respective cheek portions and lip portions for the upper and lower lip, the lip portions comprising a lip shield and mucous pads which are separate and spaced apart from the lip shield, the cheek portions and lip portions being connected to each other by flexible connecting elements, and the connecting elements being disposed between the lip shield and the mucous pad. Such a retractor allows a largely free treatment of the tooth portions to be treated and provides a comfortable fit for the patient.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: July 18, 2006
    Assignee: KerrHawe SA
    Inventors: Beat Kilcher, Anthony Quarry
  • Publication number: 20060134579
    Abstract: The present invention relates to the affixation of dental dams and Class III matrixes utilized in conservative dentistry and oral surgery. In particular, the present invention relates to a device and method for retaining and stabilizing a dental dam or Class III matrix, or other device, in the mouth of the patient, which can be clamped between 2 adjacent teeth.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 22, 2006
    Applicant: KerrHawe SA of Via Strecce
    Inventors: Beat Kilcher, Marco Da Rold
  • Publication number: 20050130099
    Abstract: A dental instrument with interchangeable roller tips for distributing restorative materials on a tooth surface quickly, precisely and homogeneously with little adherence of the restorative material to the instrument. The instrument has an elongate body with a handle portion and one or two working ends extending therefrom with a roller tip rotatably mounted on each working end. The roller tip may be removable from the working end, such that differently shaped tips may be used interchangeably during the restoration of the tooth, as necessary. The roller tip may rotate directly about the working end, or alternatively, a bushing or bearing may be rotatably mounted on the working end between the working end and the roller tip, such that the roller tip is rotatable on the working end by means of the rotatable bushing or bearing.
    Type: Application
    Filed: December 15, 2003
    Publication date: June 16, 2005
    Applicant: KerrHawe SA
    Inventors: Mario Besek, Beat Kilcher, Marco Rold
  • Patent number: 6905244
    Abstract: In the holder set for digital sensors for dentistry, the holders for each kind of radiograph such as periapical radiographs of front teeth (anterior teeth) and lateral teeth (posterior teeth), on one hand, and bitewing radiographs, on the other hand, can be used for all sensor formats, the sensors being seized in the respective holders in a self-centered manner by two arms independently of their format.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: June 14, 2005
    Assignee: Kerrhawe SA
    Inventors: Beat Kilcher, Marco Da Rold
  • Publication number: 20040209225
    Abstract: The cheek and lip retractor for dentistry comprises respective cheek portions (7, 8) and lip portions (1, 2) for the upper and lower lip, said lip portions comprising a lip shield (3, 4) and mucosa pads (5, 6) which are separate and spaced apart from said lip shield, said cheek portions and lip portions being connected to each other by flexible connecting elements (9-12), and said connecting elements being disposed between said lip shield and said mucosa pad. Such a retractor allows a largely free treatment of the tooth portions to be treated and provides a comfortable fit for the patient.
    Type: Application
    Filed: March 17, 2004
    Publication date: October 21, 2004
    Applicant: KerrHawe SA
    Inventors: Beat Kilcher, Anthony Quarry
  • Publication number: 20040146831
    Abstract: A delivery system for administering a metered dose of dental sensitivity product to a tooth includes a reservoir sized to contain a volume of the dental sensitivity product and suited to dispensing the dental sensitivity product in small quantities while maintaining stability of the dental sensitivity product. The system further includes delivery structure in communication with the reservoir and configured to deliver the metered dose of dental sensitivity product. In an exemplary embodiment, the delivery structure includes a cannula and operates to deliver the dental sensitivity product as a spray to the affected tooth when actuated by a user.
    Type: Application
    Filed: January 23, 2003
    Publication date: July 29, 2004
    Applicant: KerrHawe SA
    Inventors: Lorenzo Balmelli, Patrizia Balmelli-Priori, Gert Ulrich Silber, Beat Kilcher
  • Publication number: 20040134002
    Abstract: The brush for use on a dental rotary hand piece comprises a bristle field in which the length of the bristles decreases from the external radius of the bristle field towards its center. A brush of this kind allows improved finishing, polishing, and cleaning of interdental spaces and fissures in the chewing surface.
    Type: Application
    Filed: July 22, 2003
    Publication date: July 15, 2004
    Applicant: KerrHawe SA
    Inventor: Stefan Zimmer
  • Patent number: 6761562
    Abstract: The interdental wedge is particularly intended for use in the insertion of approximal fillings of light-curing synthetic materials and consists of a combination of a wedge body and an underlying compressible sole comprising a rim which projects on both sides of the wedge body. The sole portion is preferably made of a thermoplastic elastomer and the wedge body of a translucent synthetic material. A wedge of this kind provides a strong spreading force, and the two rims are deformed when inserted, thereby ensuring a firm retention and a tight application of the matrix to the dental anatomy, and they form sealing lips in order to keep away the saliva from the treated area and to gently displace the papilla.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: July 13, 2004
    Assignee: KerrHawe SA
    Inventor: Beat A. Von Weissenfluh
  • Publication number: 20040096040
    Abstract: In the holder set for digital sensors for dentistry, the holders for each kind of radiograph such as periapical radiographs of front teeth (anterior teeth) and lateral teeth (posterior teeth), on one hand, and bitewing radiographs, on the other hand, can be used for all sensor formats, the sensors being seized in the respective holders in a self-centered manner by two arms independently of their format.
    Type: Application
    Filed: September 26, 2003
    Publication date: May 20, 2004
    Applicant: KerrHawe SA
    Inventors: Beat Kilcher, Marco Da Rold
  • Publication number: 20040029073
    Abstract: A preferred rubber dam comprises a bag provided, at the locations situated above teeth when the rubber dam is applied in the mouth, with projections that are intended to be cut off. The projections with the resulting holes are closely fitted on the teeth to be treated in order to seal off the oral cavity.
    Type: Application
    Filed: March 20, 2003
    Publication date: February 12, 2004
    Applicant: KerrHawe SA
    Inventors: Beat Kilcher, Marco Da Rold, Felix Aschmann
  • Patent number: D611592
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: March 9, 2010
    Assignee: KerrHawe SA
    Inventors: Beat Kilcher, Marco Da Rold, Felix Aschmann
  • Patent number: D624998
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: October 5, 2010
    Assignee: KerrHawe SA
    Inventors: Beat Kilcher, Marco Da Rold, Felix Aschmann