materio-d8/web/modules/custom/materio_samples/materio_samples.module

<?php

/**
 * @file
 * Contains materio_sapi.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Solarium\QueryType\Select\Query\Query;
use Drupal\search_api\Query\QueryInterface;
use Drupal\Core\Template\Attribute;


function materio_samples_form_node_materiau_edit_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id){
  // get current user
  $user = \Drupal\user\Entity\User::load(\Drupal::currentUser()->id());
  if(!$user->hasPermission('materio_samples_edit_materiaux_titles')){ 
    $form['title']['#access'] = false;
  }
}