Each Member State with provisions in this field laid down by laws, regulations or administrative provisions shall recognize the diplomas, certificates and other evidence of formal qualifications of dental practitioners specializing in orthodontics and oral surgery awarded to nationals of Member States by other Member States in accordance with Articles 2 and 3 of Directive 78/687/EEC and which are listed in Article 5, by granting such qualifications the same effect in its territory as the diplomas, certificates and other formal qualifications which it itself awards.