#Immediacy 26. Apr 2021

A Technique Combining Straumann Zygomatic and BLX Implants for full arch rehabilitation

A clinical case report by Alex Fibishenko, Australia

The consideration of Zygoma implants is typically thought to be reserved only for severe bone atrophy from long term edentulism and denture wearing. However, bone atrophy is not the only contributor to a lack of bone. Other osseo-destructive mechanisms include odontogenic pathology, sinus anatomy and pneumatization following extraction, as well as iatrogenic factors (failed prior treatments), and may well be present in dentate individuals with terminal or dysfunctional dentitions.

Introduction

In such patients, early planning and treatment, which may include Zygomatic implants, before they face full edentulism can be highly advantageous not only through halting the progression of odontogenic diseases and its associated additional surgical constraints, but also in a patient’s journey and physical, mental and social wellbeing. Early treatment offers additional means of controlling the outcome both surgical and restorative, as well as a significant improvement in the patient experience and quality of life.

Traditionally the advanced nature of Zygomatic implants and suspected complications historically reported in the literature have led to a reluctance by clinicians to use this method before other alternatives have been all but exhausted.

However, when anatomical, biological, pathological, occlusal, or other constraints exist, which strain traditional implant treatment to the limits of its bioadaptive capacity, a new technique with Zygomatic implants may offer a more definitive alternative by working well within its limitations and a better controlled biomechanical equilibrium.

The following case report describes the new Straumann Zygomatic implant ZAGA flat used in combination with Straumann BLX implants for the successful immediate rehabilitation of a partially dentate patient who has worn partial dentures for many years and suffered from the consequences of partial dentures and significant oral dysfunction. The case report describes the rationale and the procedures leading to the fitting of final fixed implant-supported restorations within 24 hours from the surgery.

Initial situation

The patient was 61 years old female, non-smoker, diabetic (Type 2) on Metformin - well controlled, has mild osteoporosis, takes Vitamin D, mildly overweight (BMI 34.2) and has no other relevant systemic conditions.

The suffered cycles of failed dental work and tooth loss predominantly from decalcification and recurrent caries. She was referred by her dentist for bimaxillary implant-supported rehabilitation after exploring her options and considering her desires for a more definitive solution, functioning teeth and a ‘nice smile’.

On presentation she had many missing teeth and carried upper and lower partial dentures, which she had for 30 years but has not been able to wear at all since the loss of tooth 34 shortly prior to her presentation, which served as the last remaining natural occlusal stop. She had severe oral dysfunction and was unable to bite or chew numerous foods. She was embarrassed to smile. (Fig. 1)

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