Case Reports

Dr Henri Diederich, Med. Dentist has been running his own Clinic in the Grand-Duchy of Luxembourg since 1985. Dr Diederich has installed the Pterygoid implants and CF@O in plates in hundreds of patients whilst documenting his work for a numerous years. He is a leading authority in the application of Pterygoid implants. Read more about his work in the case reports below.

Minimally invasive treatment option in the Atrophied Mandible

Case Reports - Sep 2021

ROOTT M implants are a new generation of implants manufactured by TRATE (Switzerland). The Implants have been specifically developed for different locations in the jaw, they have also facilitated flapless and immediate loading.

The one-piece implants have no other components needed except a fixation screw for attachment to prosthesis. The special compressive thread produces compression when inserted into the cancellous bone, creating a layer of cortical bone around the implant which allows immediate loading with high primary stability. The absence of intrinsic micro gaps helps avoid peri-implantitis. READ MORE

Rehabilitation of Atrophic Maxilla using Pterygoid Implants

Case Reports - Jan 2018

Restoration of a severely atrophic jaw presents a challenge in dentistry. The poor bone quality of the posterior maxilla, coupled with limited vertical bone height due to sinus pneumatisation and chronic periodontitis often leaves insufficient bone for implant anchorage [1,2].  READ MORE

An alternative treatment option in the Atrophied Maxilla without Sinus Lift and Bone Graft

Case Reports - March 2020

Extremely resorbed alveolar bone with insufficient height (10mm) and width (6mm) for conventional implant placement, the insufficient space between adjacent edentulous teeth for the use of conventional implant, or the presence of neurovascular bundles that may make implant placement impossible are but to mentioned few of these reasons.   READ MORE

No bone graft

Minimal treatment options with

One-Piece Implants

Case Reports - March 2020

One Piece implant is also called monobloc implant. A
monobloc implant is a set of dental implants comprising an
implant body and a part forming a post stem, the different
implants may have different angles between the implant body axis and the post stem axis, the implant bodies are designed to be ϐixed in the mandibular or maxillary bone. It may have a built-in abutment as seen in the Compressive Implant from ROOTT (TRATE) or the abutment may be screwed to the implant as seen in the compressive multi-unit from ROOTT (TRATE) or the tissue level implant from STRAUMANN.

One of the major changes seen in the one-piece implant by
ROOTT is the special neck design that allows the angulation of
the implant to correct the implant axis when it is needed. This
is considered as a major change because it corrects the major
disadvantage of the one-piece Implant.   READ MORE

No bone graft

Implant Treatment Options in A Compromised Bone using Prosthesis Retained by Screws and Cement

Case Reports - March 2022

Cement retention is often considered to be the most successful method by reducing stress in the restoration and bone, excess cement application leading to bone loss and peri-implant disease are major issues. Patient dissatisfaction due to repeated loosening of the prosthesis cause by debonding is also a major issue in cement only retained restorations.

Screw-retained restorations allow for easier removal and access for maintenance, however, achieving a passive fit is significantly more difficult to attain with a screw-retained restoration due to stress introduced into the restoration through the tightening of screws.

The dual retained restorations ( i.e. screw and cement retained restoration) combine the advantage of both screw and cement retained restorations. A thin layer of the cement reduces stress in the restoration and also compensate for any minor discrepancies in the fit. Further Cement-retained restorations reduce stress and the likelihood of stress related implant failure or peri-implantitis. The use of temporary cement makes restoration removal easier. 


No bone graft

Rehabilitation of an Atrophied Mandible

HD´s treatment plan for this 63 year-old lady patient:

1. One-piece compressive implants in the front and 2 hybrid plates in the retro-molar regions.

2. Load with a metal ceramic bridge after the Surgery 10 days later.

Rehabilitation of the Left Maxilla

63 year-old male patient- did not want a sinuslift.

1. A pterygoid implant, a hybrid plate, and two compressive implants.

2. Load the implants after 10 days with a metal ceramic bridge.

Partial Rehabilitation of the Maxilla and the Mandible

63 year-old lady patient wanting replacing missing teeth in both the mandible and the maxilla.

1. In the maxilla: pterygoid implants, two hybrid plates and four compressive implants.

2. In the mandible: two hybrid plates, and four compressive implants.

3. Load maxilla and mandible with metal ceramic bridges after 10 days.

Total New Rehabilitation of Maxilla and Mandible

A 68 year-old male patient wearing old bridges with broken roots.

1. In the maxilla: extraction, and implantation of pterygoid implants, two hybrid plates, and five one-piece compressive implants

2. In the mandible: extraction and thirteen one-piece implants.

3. Load after 10 days in the maxilla and mandible with metal ceramic bridges.

Total Mouth Rehabilitation

54 year-old male patient.

1. In the maxilla: extraction, implantation, pterygoid implants, two hybrid plates and five compressive implants.

2. In the mandible: extraction, implantation of twelve one-piece compressive implants.

3. Load two metal ceramic bridges after 10 days.

Atrophy in the Front of the Maxilla

68 year-old lady patient wore a partial prosthesis in the front fixed on implants. The lady did not want a graft. The treatment consists of:

1. A pterygoid implant, three hybrid plates, one compressive implants.

2. Load a metal ceramic bridge 10 days later.

Atrophy in the Right Maxilla

Lady of 63 wanted an alternative to a sinus lift.

1. A pterygoid implant, one hybrid plate, and five compressive implants.

2. Receives a new metal ceramic bridge ten days later.

Atrophy in the Maxilla

54 year-old wanted fixed teeth in the maxilla.

1. Pterygoid Implants, four hybrid plates.

2. Settle a metal acrylic bridge after 10 days. The whole construction is screwed.