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I industry report Fig. 1_Single-tooth radiograph showing fractured tooth #22. Fig. 2_Thermoplastic root filling in tooth #22. Fig. 3_Radiograph of the orthograde root filling, found to be lege artis. Fig. 4_Crown-lengthening kit (Acteon). Fig. 5_Ultrasonic crown lengthening of tooth #22 using minimally invasive incisions. Fig. 6_Microsurgical 8-0 suture. _Introduction Crown fractures frequently force the treatment provider to make a clear-cut treatment choice be- tween tooth preservation and dental implant treat- ment.Speakersatimplantologicalcongressestendto present impressive implant/prosthodontic solutions foranteriorfracturecases,tothepointwheretheau- dience could be tempted to believe that this was the onlyappropriatetreatmentalternative.Thefollowing case report documents a tooth preservation option thatissimpletoperform,minimallyinvasiveandsuc- cessful. A66-year-oldmalepatientpresentedatouroffice withafracturedupperleftlateralincisor(tooth#22). The clinical crown of this tooth had fractured in the marginal region, with the pulp of the tooth slightly exposed in one location. The pulp tissue vitality test showed a weak positive result. The patient was com- pletelyfreeofpainsymptoms.Therewasnorootmo- bility. Available treatment options were discussed with the patient based on a single-tooth radiograph (Fig. 1). The neighbouring teeth #21 and 23 had been restored with all-ceramic crowns two years previ- ously. However, a three-unit fixed prosthetic denture wasrejectedbythepatient,aswassurgicaltreatment withimmediateimplantplacementfollowingextrac- tion. Conservativetoothpreservationwasthereforethe treatment of choice for patient and treatment provider alike. The patient was informed that tooth preservation could only be successful if the required orthograderoot-canalinstrumentationwaspossible, the tooth was symptom free and biological width could be restored prior to the fabrication of a crown restoration. If these requirements were not met, an implant/prosthodontic solution would have to be re- sorted to as an alternative. _Treatment sequence Following extensive patient education and pre- therapeutic discourse, the patient received local anaesthetic, and tooth #22 was instrumented. This Minimally invasive crown lengthening as an alternative to implant treatment Author_Prof Marcel Wainwright, Germany 34 I implants1_2012 Fig. 5 Fig. 6 Fig. 3 Fig. 4 Fig. 1 Fig. 2